The First Test By DaveTheFoxMage This story is a work of fiction. Any resemblence to actual people/places/events is entirely coincidental. Also, this story contains acts which should not be attempted in real life and does not constitute advice, suggestion, instruction, etc. --- "Hmm... How about this one?" "Nah, sounds like he'd only want to be with you." "Oh, right. Uh... this one?" "I do like the look of---wait, what about this one?" Marcie looked at where Ally was pointing at her computer monitor. "Ooh, I like that one! Looks like there's not a lot of interest in doing the testing for..." she checked the stats before continuing, "her. I wonder why?" Ally read further along in her profile. "Let's see... female elephant, bisexual, getting a dick, nothing too unusual there. Maybe it's the size? I guess the requirement to take an elephant is gonna rule out a lot of testers." "Not you, though..." Marci leaned over against Ally. She found her lover's ability to handle massive insertions impressive, and certainly wasn't about to turn down a chance to see their hole at work. "Wanna take her as our first test?" "Absolutely!" Marci clicked the button to volunteer herself and Ally as testing partners for the elephant. They had each taken a position recently as testers for those undergoing physical changes. After their initial training, they were prepared for their first real patient. Being pure testers meant that their responsibilities were much simpler than someone like Sally. They simply needed to log on to the website, where they would see everyone who was in the testing queue. They would choose someone to partner with, as they just had, and their first meeting would be at the scheduled date and time. What happened beyond that would vary based on what they worked out with the individual being tested. Their assignment was straightforward. They were to work with the individual to make sure their changes were to their satisfaction, check for any side effects, and to be a point of contact for any questions or concerns that might come up. They would then be in communication with the lab or any other department as-needed. "Looks like they're gonna meet up with us tomorrow," Marci said, with a mix of excitement and a hint of nervousness. At the end of the day, she *was* inviting someone into their new home. Ally looked around, "So... are we doing this in our bed, then?" There was no other bed in the house, which didn't leave much in the way of options. Marci's eyes widened. "You know, that's probably something I shoulda thought about..." Ally looked down at the bed. "Honestly, it's probably plenty big for three of us. Besides, I think it's too late to do anything about it now." It was late in the evening, and at this point any furniture stores would have been closed. "Yeah, we'll just have to do it before next time..." --- Marci heard the doorbell ring, and made her way over to let their guest in. She still wasn't sure how she and Ally had managed to keep their hands off of eachother, but they had agreed to save their stamina for tonight. Ally joined her as the door opened, revealing a very large, shyly-smiling elephant. "Hi," their guest said, "I'm, uh, here for my first testing session? You must be Marcie and Ally." The two introduced themselves, and Ally added, "And you must be Clara? Feel free to come in, of course." She nodded as she stepped inside, ducking under the doorframe. Despite the house being built for those of taller stature, Marci guessed the elephant was about ten feet tall or so. "Oh, yes I am. I was very surprised to see two were going to be testing me. But maybe that's normal? I've never done this sort of change thing before, so it's all new to me." "Most do it solo, but there are occasionally teams that do it." Marci looked over at Ally, taking their hand and continuing, "Or couples." "Mmm, a couple, hmm?" The elephant looked back and forth between the pair, "I have to admit, I like the sound of that." "Well," Ally said, starting to lead them to the bedroom, "Why don't we get to the bedroom and get started?" "Straight to the point," Clara observed, "I'm definitely ready." As the three stepped into the bedroom, she added, "Oh, this looks like your bedroom. We're doing this in your bed?" "If that is okay with you---we may not have fully thought about the bed situation. We're actually both new to this." As she spoke, Marci pulled up a new text file on her computer, to record notes. "Oh, that is *more* than okay with me." Marci looked at the others and figured she might as well break the ice, pulling her clothes off and tossing them unceremoniously on the floor next to her computer chair. Soon, the other two had disrobed as well, giving her a good look at Clara. The elephant was, to put it mildly, stacked. As the larger woman rubbed under her ample breasts, she sat down on the middle of the bed, laying back onto it. Gesturing between her legs, she said in a husky voice, "I'm sure you two will want to see this." Due to the more complex and invasive nature of sex changes compared to mere resizing, they were typically done in a multi-stage injection. The inner changes would happen first, as quickly as possible while the patient would be pumped full of sedatives and painkillers. This was done for the purposes of avoiding chemical imbalances and to minimize the amount of time that the body spent fighting itself. By the end of the first stage, there would be no visible changes, externally. Stage one was always done in the lab, with the patient under 24/7 observation for the first week. Not only did monitoring require special equipment that testers like Ally and Marci wouldn't have, but if there was a rare life-threatening side-effect, that was the stage where it would happen. At this point, Clara would have been discharged from the lab the day before. Marci sat down next to her, pulling out a tape measure from one of the bedside tables, as Ally took a seat at the computer. Lowering her head, the horse started to run her tongue across the elephant's clit. While Marci wasn't especially into girls, she did have to admit a certain weakness for what the elephant was going to be turning into. She just told herself that she was giving Clara her very first blowjob, which was true in a way. She heard a low, deep, "Mmm, that's it---suck me off..." before the elephant turned to Ally and asked, "Enjoying the show?" She felt one of Ally's hands give her left asscheek a squeeze. "I love the show. I get the feeling you like having an audience." "I love it, especially with a couple," she heard Clara reply, feeling the large clit hardening in her mouth, "I may have a thing for cuckold play, and enjoying one partner while the other watches. Consentual, of course, and I like switching it up between the couple. That's a big part of why I'm doing this. If you like girls, you can have fun up top. Like guys, enjoy down below." Feeling the clit had grown as large as it was going to in her mouth, Marci pulled her lips off with a wet *pop*, then grabbed her tape measure. As she measured, she licked the elephant's pussy juice off, before calling out, "Dick length, 1.75 inches... Circumference 5.5 inches..." "Got it," Ally said, typing it into the file. "So," Marci said to Clara, "I'm not used to that, at least until it gets bigger. But... have you ever had someone eat your ass, then watched her give her lover a kiss?" Sounding a bit taken aback, she heard Clara reply, "No, not at all! Never met anyone who ever offered. I mean, I've had it fucked before, lots of times, but nobody has ever wanted to lick it." "Is it something you'd liiike?" Marci crawled to the head of her bed, looking down at the larger Claire. She made a point of swishing her tail aside, to give Ally a good view of her from behind. Almost immediately, she felt a couple of her lover's fingers slide into her pussy and let out a small moan. "I, um, yes!" Claire said eagerly, spreading her legs. Marci was in a teasing mood, though, and wanted to enjoy Ally's fingers a little longer. "Wanna know a secret? I like eating ass best when my partner's on all fours. After all, nothing beats watching a cock dribbling all over my bed, if I'm doing a good job..." With a nod, Clara rolled over onto her hands and knees, also turning sideways onto the bed. "So, uh, you've rimmed a lot then?" She was clearly a bit shy about this, but Marci's restraint was starting to crumble around the edges. "The only ass I've ever eaten is Ally's here. But I could make out with their sloppy horsehole all day long..." Glancing over her shoulder, she saw Ally rub some precum from their cock, then rubbing their finger against her rapidly wettening pussy. Leaning forward, she took a long smell of the elephant's asscrack. She was slightly saddened that it wasn't as musky as she had hoped, but she enjoyed the scent regardless. Spreading Clara's asscheeks, she saw a surprisingly tight looking hole, but liked the look of the scraggly hair that surrounded it. She decided to start with a playful kiss, puckering up her wet lips and pressing them against the startled elephant's asshole. While the taste was quite mild, the thought of what she was doing excited her. Here she was, literally kissing the ass of someone she had never seen before, while her lover (and hopefully soon the one who would put a foal in her) watched and fingered her. In the meantime, what had started out as a playful kiss was quickly turning into making out with it, as she did her best to work up as much saliva as possible, to drool all over Clara's hole. The elephant's raspy groans just excited her more. Pulling away for a moment, she admired her saliva running down the elephant's large asscrack. With how wet and slippery it looked... She took one finger and started tracing it around Clara's asshole. "Did that feel good? I got your tight little shithole aaallllll nice and sloppy..." There was only a needy groan from Clara in response. "You're not very talkative when you play, are you?" Marci saw the elephant's ears sway as she shook her head. "You seem to like that I am, though?" Clara nodded. "Well, time to go back to eating elephant hole!" Once again, the eager horse buried herself between the elephant's asscheeks, going out of her way to slurp, lick, and suck as loudly as possible. She had always loved the sound of fucking, even going to sleep quite often with a playlist on her computer playing the audio with the monitors turned off. Vulgar dirty talk, moans, groans, squelches, pops, even the random sounds of ferals---she loved it all. Feeling a belch rising up from lunch, she opened her mouth but didn't pause her licking as she let it out. The taste mingled in her mouth with the flavor of Clara's ass, as she pushed her tongue inside the elephant's hole. Sure enough, it was certainly tight, but the wetness and play had relaxed it to the point where her tongue just slipped inside. The flavor inside was a bit stronger, which excited Marci. As her tongue explored, she felt Ally's fingers push into her own ass. Her lover knew she liked it to hurt a little, so she appreciated the lack of lube on them. Though she realized a bit too late that she hadn't prepared herself for anal today. "Hmm, seems someone is a bit messy inside," Ally said, "What *are* we going to do with you?" Pulling away from Clara's spit-soaked hole, she replied, "Mmm, want to see me suck my own shit off your fingers? Eating her ass has got me all excited, but I want more..." She had yet to actually taste it, as much as she loved ass-eating (and as much of it as she had done since meeting Ally). She was excited to do it, but hadn't been sure how to break the ice. She sat up, and Clara rolled over onto her side to watch as she felt Ally pull their fingers out. Gesturing in front of herself on the bed, Clara simply said, "Kneel." Marci did as she was told, curious what was about to happen. "You're such a dirty horse. I can still feel how much you slobbered all over my ass, and you loved having your filthy hole stuffed, didn't you?" Well, the condition of her own ass honestly *had* been a mistake, but she did have to admit it excited her. Besides, she was curious where the elephant was going with this. Marci nodded. With a nod to Ally, Clara said, "Then eat up. It'll be practice from sucking Ally's shit off my cock later." She also heard a small whimper from Ally. Her lover had admitted to her previously that they had a big thing for elephants and species-themed play. While it wasn't a kink of her own, the idea of watching Ally get used by someone else, elephant or otherwise, did excite her quite a bit. Ally had also let Clara know as part of the messages exchanged before meeting up. Marci opened her mouth as Ally's fingers slid inside. They were definitely a bit dirty, with a bit of brown residue on them. Her gag reflex kicked in, as her body resisted what she was trying to make it do. "Go on," Claire said with a hint of patient tenderness, "You know this is what you've been wanting. With how much you love eating ass, clearly this is what you were born to do, you filthy mare. Choke it down---don't let your meal go to waste." She could feel the blood rushing to her cheeks, though of course it was hidden by her fur. Nobody had ever talked to her that way. Insults, sure, but never anything quite like this. She had to admit, though, it did excite her. She continued to struggle, to try to force herself to swallow. Looking up at Ally, Clara added, "You loved watching her eat my ass too, didn't you? Looking forward to serving and pleasuring me together, horse?" As she heard Ally's shy, "Y-yeah," she finally managed to force herself to gulp it down... --- As the door closed behind Clara, Marci felt Ally's hand take hers. "How are you feeling?" "It was..." Marci struggled for a moment to find the right word, "...intense." "Do you want to talk about it?" "I do, but I'm not really sure what to say?" The two walked back to the bedroom. They were both a mess, so laying in an already messy bed seemed a logical choice. As she sat down, she started, "It was... good? I mean, I really enjoyed it, but it was just very... yeah, intense." She looked up at her lover, hoping her worry wouldn't show, "Did I go too far? I mean you were right there, and I---" She was interrupted by a sudden kiss from Ally, her lover not even hesitating despite how she knew her mouth tasted. Pulling slowly away, Ally comforted, "If you enjoyed yourself, then you didn't go too far at all. I enjoyed it too, you know!" "Thanks," she said, "But like, is it okay? I mean, with us being lovers and stuff, is it okay that we... that I... um..." Ally pulled her close for a hug. "I think what you're trying to ask is whether doing that hurt our relationship at all. Am I right?" She nodded, her mind starting to race ahead to where they were leading. "Well, I still love you, and you still love me, right?" "R-right!" "Besides, we became a couple both knowing we were gonna do this, yeah?" "...You're right. I think when it actually happened for real, though, I just got really overwhelmed with 'what ifs', you know?" "I know," Ally replied, their arms wrapped around her. "But if you had a good time, and I hah a good time, and Clara had a good time, then there's no reason for it to hurt what you and I have, right?" "I just... she's so cool, and I know you like elephants, and I'm just a nerdy hornball mare..." "Well, you know what I like a whole lot more than elephants?" She looked up at Ally questioningly. "Nerdy hornball mares," her lover smiled back at her. She wrapped her arms around the other horse, holding them close. --- "Okay," Marci said, "let's see what today's plan is..." A few days had passed, and today was going to be Clara's second visit. Checking her phone, she saw she had a new message from the elephant. She read it aloud to Ally, who was standing at the stove cooking pancakes for breakfast. They had quickly learned that neither of them was a good cook, but Ally had gotten the hang of making pancakes so they quickly became their most frequent breakfast. "Hi again," she read, "It's probably a good thing I couldn't stop in these last few days---things were looking and feeling really weird, uh, down there. Don't worry, it was just like I was told to expect. I'd kinda like to keep that covered for today and just focus on other things, if that's alright." "Well," Ally said, "if she's completely sure everything is alright, then we can do that. What does she have in mind?" Marci typed the message in and sent it, then gave Ally a hug from behind. The two generally didn't wear clothing around the house, so Ally was naked under their apron. She often found herself torn whether to hug Ally or grope them. As one hand slid down her lover's back, she was thankful for the option of doing both. She gave one of Ally's firm cheeks a squeeze, then started to slide down between them when her phone dinged again. As much as she didn't want to, she pulled her hand away and checked her phone again to see a reply from Clara. "I think today I'd love to get pleasured above the waist. I'd love for Ally to watch you putting that tongue to work all over." Marci thought for a moment, then replied, "I think Ally would love to watch. And I...uh...might have discovered a new kink or two last time..." "So, what does she have in mind?" Ally asked. "A very sexy show, for a very sexy Ally..." she answered. She was curious what Clara had in mind for Ally, though. Their test subject was listed as bi and knew how much her lover was into elephants, but so far all of Clara's attention had been focused on Marci. Her phone dinged, and the reply was a simple, "Oh?" As the pancakes were getting done, she let Clara know they were about to have breakfast and would need to reply later. The two sat down for breakfast, talking about getting Ally back on their hooves once their first paycheck came in and a couple of fun fall events they wanted to check out. After they finished up and put the dishes into the dishwasher, Ally decided to lay down and relax a bit before Clara arrived. Feeling a bit awkward, Marci started to type a reply to Clara. "So...I'm straight. Or I guess straight-ish? Maybe bi-curious? But after last time, I just can't get the idea of forced-bi out of my head." The elephant replied, "You were fantasizing I was a guy last time, weren't you? I had a feeling." "Yeah, I'm very sorry..." "But now you can't stop thinking about being made to take the plunge?" "...Yeah..." "You know, I'm sure a lot of people do the change I'm doing because they identify as a guy. Me? I just want to be a girl with a big surprise down below." "That's... really hot. Could you maybe, um, really call attention to you being a girl today?" "Absolutely. By the way, does Ally know about this?" "Uh... some. They know I've never kissed a girl before, and that I've got a bit of forced-bi stuff on my computer, so I'm pretty sure Ally's figured it out. I've kinda always wanted to be the girl at parties that makes out with everybody, gets fucked by everybody, and never turns anybody down. Like I get wet thinking about playing foal-roulette blindfolded in a back alley with any horse that wants a warm hole to cum in. Or a gang of ferals cornering me and having their way with me." As soon as she had hit send, she suddenly had second thoughts. But as she was frantically trying to type a reply backpedaling and apologizing, a reply came through. "You get turned on by the idea of getting used like a nameless toy, don't you?" Marci hit the reply button, then paused with her fingers over the phone's keypad. She hadn't really thought about that before, but as she started running through her vast porn collection, a lot of her favorites followed a common theme. A mare being restrained, or videos that were entirely close-ups of holes being stuffed without even showing all of the body, let alone the face. And as she thought about it, maybe that was part of what had drawn her to Ally's videos to begin with. Just as she was ready to reply, another message came through. "Does this make you wet, dirty mare?" A picture was attached, and Marci clicked on it. It was a figure covered nearly head to toe in latex. The hooves revealed it was a horse, and the exposed breasts and holes clearly revealed her as female. Her head was turned toward the camera, covered in a hood with only her nostrils and ring-gagged mouth exposed. After a long moment staring, Marci looked down and then replied. "I've got a string of pussy juice that's halfway down to the floor now." Playfully, she added, "Does that make me a dirty mare?" "It makes you the best kind," Clara replied, "I'm heading over now. And no touching yourself until I get there." --- Ally and Marci were sitting at the table when the doorbell rang. After a quick peek out the window to confirm it was the visitor they expected, the naked pair opened the door to greet the elephant. Marci's jaw dropped. Unlike last time, Clara was wearing a long, black dress. The large elephant was also wearing bright red lipstick. The mare felt her pussy clench slightly, as she was torn between the hesitation of her straighter side and the arousal of knowing she was going to be pleasing Clara whether she wanted it or not. Marci saw Ally give her a wink, as Clara stepped inside. She had mentioned, at least briefly, what she had told the elephant, and the dress had clearly been noticed. What she wasn't prepared for, though, was Clara lowering herself down to Marci's height, wrapping arms around her, and pulling her in for an immediate kiss. For a moment, the startled mare's body tensed, but after the first second or two of those lipstick-covered lips pressed against her own, she relaxed somewhat. After all, she told herself it was only a kiss---no different than what she had done with Ally very quickly after meeting for the first time, right? She braced herself for Clara's tongue to push past her lips, but instead her larger partner pulled away. The trio made their way to the bedroom, ready for the second round. As Clara slowly pulled off the dress, she revealed a sports bra and a pair of running shorts. As they had discussed, the shorts stayed on as the elephant removed the bra, tossing it aside and laying down in the bed. "Now, mare, why don't you climb into bed with me while Ally watches?" "Oh! Um, okay!" Well, ready or not, this was happening. She laid down in the bed, sliding in close besides Clara. For the first time, she started to really *feel* the elephant. Unlike her and Ally, Clara only had thin fur covering her body, so it was much more fur-on-skin than the mare was expecting. There was a certain strange softness to her partner, compared to Ally. She supposed it made sense, with the two carrying their weight differently. Without a word, Clara took one of Marci's hands and placed it on the large elephant's breast. This, too, was quite soft, though she could feel the firmness of the nipple on top. As much as Marci loved rubbing, squeezing, and groping her own, she felt a bit uncomfortable doing this for someone else. She had to admit, the warm feeling of her partner's body did feel quite nice, and hearing a soft, "Mmm..." from Ally certainly did excite her. She slowly, hesitantly went in and ran her tongue across the nipple that had been under her hand a moment ago. The mare was surprised to find this more comfortable, though as she thought about how Ally's were even larger, she supposed it did make sense. "That's it..." Clara said, as the elephant ran her fingers through Marci's mane, "Just embrace it, mare. Go ahead and suck on them, if you want." Marci wrapped her lips around and started to suck, her hand making its way to the other side. Despite the squishy breast underneath, the feeling was familiar. "Now, now..." the elephant chastised, "Open your eyes. Can't have you pretending you're sucking on Ally's, now, can we?" Marci opened her eyes, having closed them without really thinking about it. Clara turned to Ally, commenting, "You have a really good mare, here. It's a shame she's gonna get absolutely *ruined* by the time things finish changing." She heard an excited moan from Ally. The elephant definitely seemed to enjoy cuckolding, but after their conversation last time, she and Ally both felt secure in their relationship. At that point, there was no shame or humiliation between them---just Ally enjoying watching their girlfriend's bisexual exploration. As the horse started to run her tongue and lips more around the elephant's breast, she started to wonder if what she was doing right now counted. She supposed it probably did, since Clara still sounded like she identified as female, but that kind of stuff could get messy. Besides, it was hard not to count it when her tongue was running across a large elephant boob. Deciding she would leave that to the philosophers, she switched to the other side. --- Ally was most certainly enjoying themself, watching the pair. Having usually been either used one-on-one or double-teamed, being a spectator was a rare experience for the horse. And though Ally wasn't certain, they were pretty sure their presence and enjoyment was making things easier for Marci. They watched Clara reach down and slide a finger along the length of Marci's pussy, saying with a chuckle that the mare was pretty wet for a "straight" girl. Marci shuddered a bit, and sheepishly kept licking her nipple in silence. The elephant looked over at Ally, making a show of licking their girlfriends juices off of her fingertip. She then glanced down to where Ally's hands were slowly stroking up and down their cock. As always, it was massive but pretty soft, but the horse loved touching and rubbing it anyway. After all, whether or not they could cum from it, it *did* still feel great. Ally let out a small groan as some more precum dribbled from their tip, falling with a tiny "splat" onto the floor. They had gone out and picked up a cheap carpet square, as a way to save the carpet from exactly this situation. Though they would probably end up getting rid of the carpet anyway---after all, horse hooves could be pretty hard on it. Clara looked back down at Marci, and Ally watched as she pulled the smaller woman up for a kiss. Just like at the door, Ally could see surprise on her face, though it was a bit less than it had been at the front door when Clara arrived. After the first few seconds, she seemed to relax, even parting her lips for the elephant's tongue to slide inside. Ally heard a small gagging sound as the larger woman's tongue tickled her throat, but was surprised to see Marci start to kiss Clara back after that. Knowing Marci, Ally figured the gagging sensation had triggered a bit more excitement. "Mmm, I feel you grinding on me, dirty mare..." Clara said, "You'll have to be patient though..." Hearing Marci's soft whimper, she added, "Aww, is kissing another girl getting you all wet?" Marci nodded, going back in for more. --- Clara felt Marci's lips against her own. She'd always had a few rather unusual kinks: cuckolding, forced-bi, species-based worship and degradation, and exhibionism, among others. But she tended to be rather shy about those. After all, they tended to be ones that most were uncomfortable with, and she didn't like to make others uneasy (outside of the bedroom, anyway). When she had first mentioned the idea of getting a dick, she had been surprised to discover that far more people were accepting of that. And with these two horses, Clara had a feeling she was just at the beginning of a very deep rabbithole. She saw Ally wheel the chair over, also seeing how they grabbed the carpet square to keep it positioned underneath, until they were next to the bed. Deciding to push her luck a bit, Clara asked, "Mmm, wanted to get a closer look at your girlfriend being used by an elephant?" Seeing Ally nod, she decided to push a little further. Taking Marci's head and gently pulling her away to face Ally, she continued, "See how she's covered in my spit? How her lips are shining with it?" She ran her tongue along the mare's lips, never taking her eyes off Ally, "She's not even a lesbian, but here she is eagerly serving an elephant woman like me." Out of the corner of her eye, she saw Marci close her eyes and hang her head a bit in shame. Clara was a bit concerned, thinking she had struck a nerve with that one, but she felt the mare grinding harder against her despite the shame. "You know," she turned back to the mare, "Your shame would be a lot more convincing if your pussy juice hadn't already leaked all the way through my shorts..." --- A few more days had passed, and Clara stood on the horses' doorstep and rang the doorbell. Once again, she was wearing the same black dress. Unlike last time, though, there was a bulge below the waistline. The door opened after a few moments to reveal the naked pair. Clara stepped inside, and without a word reached down to push one of her large fingers into Marci's pussy before the door had even closed behind her. The mare was a bit startled, but without saying a word adjusted to a wider stance for easier access. Clara then pulled out and held her finger up to Ally. "Smell how eager your girlfriend is to serve her first elephant cock?" "Y-yeah," Ally replied, before sucking her finger clean. With a satisfied smile, she led the way to the bedroom. Instead of laying on the bed, though, she grabbed the cum-stained carpet square off the floor and laid it at the foot of the bed. She turned to the equine couple, pointed down to the square, and simply said, "Kneel at each end." The pair did as instructed, and looked up at her as she slowly lifted the dress up over her head, tossing it to the side. She hadn't bothered wearing anything underneath it today, and she watched the pair's reaction. "By my measure, you're looking at six inches of hard elephant cock. And it's only gonna get bigger from here." Looking down at the pair, she added, "Aside from my tape-measure, it has never been touched before. Now, there are two mouths here, and I only have one cock. Any ideas...?" She saw Marci's hand reach down between her legs, replying with a needy whimper, "Can I eat your ass, miss elephant? I, uh, have something I wanna celebrate..." "Oh? And what is that?" "Um... it's on the desk." Looking over, Clara saw something on the desk and picked it up. "Hmm... A pregnancy test, eh? And a positive one too, it looks like." Marci nodded, practically beaming up at her, "Uh-huh! So can this dirty foal-factory pretty please eat your ass? I promise I won't stop until it's absolutely dripping!" Clara thought to herself that the day just got a bit more kinky as she nodded, "Very well, looks like Ally will be the one drinking elephant cum today." She took her position between the pair, feeling Marci spread her ass cheeks and quickly bury her face between them. Meanwhile, she watched Ally open their mouth and give her cock a slow lick, eyes looking up at her. Ally's tongue on her dick was a strange sensation. The closest thing she could think to compare it to was having her clit licked, but even that had been quite a bit different. Still, though, it felt great. At the same time, the feeling of that horse's pregnant girlfriend starting to slurp away at her ass felt just as good. Unlike Ally's slow teasing, though, Marci had immediately dived in. Clara put her hands on Ally's shoulders, to steady herself from the eager mare. Ally apparently decided to match their girlfriend's enthusiasm rather than continuing to tease, because in one movement the horse took her cock all the way down to her balls. Given the size of the trio, six inches wasn't exactly huge. After all, even the shortest of the three stood nearly eight feet tall. But then, she felt Ally's tongue snake out beneath her cock, reaching down to her balls. She was surprised by just how sensitive they were, but realized that was probably normal. While this was not her first time being worshipped by a couple (she loved to attend play parties), this was her first experience with quite a few other things, and she was loving every moment of it. The pair were quite enthusiastic, both eagerly slurping and sucking as Clara tried to stay on her feet despite the intense pleasure she was feeling. She knew she would need to stop them soon, because she wasn't ready to cum yet and felt like she might be starting to get close. "Okay, that's enough for now," she said, and the two pulled away. She walked (a bit unsteadily) over to the bed and climbed into it, with the couple sliding into bed next to her, one on each side. The pair each laid a head on her shoulders, looking up at her. Marci's face was completely covered in drool, and from the feeling Clara had between her asscheeks, the mare hadn't exaggerated about slurping away until her hole was dripping. "Now," she continued, "I would like to see the two of you make out for me." As their lips met over the elephant's chest, she added, "I want you both to taste me on the other's lips..." She had been expecting some shyness or reluctance from the pair. After all, with couples she had been with in the past, this tended to be when the realization of what had just happened sank in. Instead, she was pleasantly surprised to see the two horses immediately dive into a deep French kiss. She even saw Ally run their tongue around Marci's lips and cheeks, trying to lick up the mess the mare had made of herself. Deciding she couldn't let the horny couple have *all* the fun, she slowly ran her hands down the backs of the pair. Either they didn't notice, or it just blended in with the pleasure they were feeling from sharing her flavors with eachother. Eventually, though, she slid her hands around each horse's tail and down to their asscrack. On her right side was Ally, and as her fingers explored, she suddenly realized their hole was much more well-used than she would have assumed from their rather shy personality. She hadn't been trying to push inside, but two of the elephant's large fingers accidentally slipped in, eliciting a moan from the needy horse. The other side was a similar surprise. From all of Marci's dirty talk, the mare's ass was a surprisingly tight hole. Though she seemed to equally enjoy as Clara traced a finger around it. The elephant thought to herself that it was a shame she would only be seeing the couple for a month. There were so many things she wanted to do, and they seemed like a great fit for them. By now, the pair were whimpering and moaning from the attention she was giving them, and their kissing had reached the point where saliva was dripping down into her cleavage. She decided to let them have their fun together for a bit longer, then pulled her fingers away. After all, she had more plans for the two of them... --- As before, the door closed behind Clara, leaving the couple alone in their living room. Ally was a bit on edge. Not emotionally---they had loved seeing Marci cum over and over again---but because despite the attention the elephant gave Ally, she had not yet made them cum once. While the horse found the anticipation exciting, it also was a bit rough at times. "So," Marci teasingly asked next to them, "hopefully you didn't mind my breath *too* much when we were making out..." With a smile, Ally replied, "Not at all! And I'm sure you loved mine." "Mmm, I did..." she replied, resting her head on Ally's shoulder and wrapping an arm around them. "You know, I think she doesn't really know how to make you cum. Next time, let's teach her together! After all, you deserve it just as much as I do. But you're probably just the first person she's ever been with who has a massive cock but can't cum from it being touched." Ally felt her wrap both arms around them and bury her face in their chest, "You're a one-of-a-kind lover, you know? I could spend hours slurping away at your dick, nibbling and sucking on it to my heart's content, and I know juuust how to make you cum afterward." Ally let out a small whimper as she reached down and traced her finger from the back of their balls, all along their needy asshole, and up to the base of their tail. "You know, we're seeing her again in a few days, right? I'm... probably gonna regret this, but I kinda want to hold off cumming until then. Then we could *really* put on a show for her when I go off." Marci giggled, "I love that idea! Um, in that case, want to get some food? It's still early enough for places to be open." "I'd love that. Wanna hit the cafe?" Ally didn't say which cafe they meant---they didn't need to. "Sure! I know Sally's been asking how it's been going for us. We could give her the full rundown." The mare looked down at herself, adding, "I guess we should probably clean up and get dressed then, shouldn't we?" There was a touch of reluctance in her voice. Something Ally had learned about her quite early on was that she was a nudist, enjoying being naked even when nothing sexual was going on. Ally was just now starting to get used to the sight of a naked horse not necessarily leading to fucking, but they had to admit it made quiet evenings together feel more intimate. After a quick shower (hunger was winning the battle over horny), the two got dressed. Ally had some clothing of their own, now. It wasn't anything fancy, but Marci insisted that she loved the look of a comfy t-shirt and jeans on them. --- "That's one special for Ally, and a number five for Marci. Mind if I join you? I'm just getting ready to go on break." Seeing them both nod, Sally slid in next to Marci with her own meal from the carnivore menu. "So... how's it going?" she asked with a wink. "Oh, it's---" "Awesome!" The couple looked at eachother and laughed, before Ally continued. "It's been going great. We've both been really happy and enjoying ourselves, and we've only got one more session with our first patient. It's a bit of a shame, because we've been having fun with her." "You do know you *can* stay in contact after someone goes through changes, right?" The collie gave them a crooked grin, "After all, I was Three's tester, and she's still with me. Oh, that reminds me! Ally, Three was asking if you've got a new phone yet. She wanted to see if you and Gloria wanted to hang out sometime. And I know the offer would extend to you too, Marci---she just wasn't sure if you'd be into what she has in mind." Ally let out a chuckle, "How does that saying go? 'It's always the quiet ones'? That's pretty much Marci in a nutshell." They gave a rather embarrassed-looking Marci a wink. "I... um... I mean... Does she... Uh..." Sally laughed, "Marci.exe has stopped responding?" "Y-yeah, kinda..." the mare stammered. "Well, you know Three. The more, the merrier as far as she's concerned. Maybe the four of you could hang out and spend some time together. I know she and I have been talking about a big holiday party---those are just around the corner, you know! The only real problem is space. My house is pretty small, and the barn isn't going to be appealing to general guests. I've been thinking about renting a place to host it, but then it loses some of the *special* party activities it can have at our place." She let out an exaggerated sigh of exasperation, then added, "Anyway, I just wanted to keep you both in the loop." "Thanks!" Marci said, already a bit excited by the idea. She wasn't used to being invited to parties, and this would be a whole new experience for her. As the trio enjoyed their meal, they talked about how things had been going the last few weeks. Sally had been doing well, though the cafe was gearing up for exam week. It was always packed with students chugging coffee and trying to get through just one more chapter before they were too tired to get back home. While it wasn't a crazy time for the cafe, it was a busy one. Sally was also interested to hear more about how testing was going and how they were doing as a couple. When Marci proudly declared that she was pregnant, Sally let out a laugh. "I'm not sure whether I'm surprised or whether I expected that from you two, but congratulations!" "Yeah," the mare replied with a shy smile, "I always kinda wanted to have a foal..." she lowered her gaze slightly, "or two..." she slouched down a bit in her seat, "or twenty..." "Ah, that's very interesting! I never would have guessed that about you. Coming out of your shell a bit?" "Yeah, there are kind of a lot of things I kinda kept hidden when I was working in the lab. Like I know a fair amount of what we do is catering to people's more kinky interests, but I just wasn't ready for people to find out I had a side like that, myself." "You know," Sally replied between bites, "I think it just makes you more relatable. Like you were always this soft, comfy, turtleneck-wearing marshmallow." Without raising her eyes, the corners of Marci's mouth turned upward slightly as she joked, "Good, my disguise fooled them." Their conversation continued until Sally checked the clock. "Well, I should probably punch back in. You two lovebirds have fun, alright?" With that, Ally and Marci cashed out and headed back home. --- The final day of testing had arrived, and as usual, the pair of naked horses was waiting in the living room when the doorbell rang. The two opened the door to find Clara standing there. Unlike last time, however, this time the black dress appeared to be in danger of bursting in front from the elephant's much larger equipment. Letting herself in, Clara stepped inside. Without a word, she grabbed hold of Ally's big, soft cock and one of Marci's breasts and started leading them to the bedroom. As she had told them before, she had something special planned for the couple this evening. She had been quite pleased to learn they both had a big submissive streak, and she was curious to push them further. She also wanted to continue to spend time with the couple, but wasn't quite sure how to ask them (or even if she was allowed to). She did have an idea, though... When they reached the bedroom, she had Ally lay down first on the bed. "Now, we haven't managed to make you cum even a single time, horse. But since you knocked this mare up, clearly you're able to. So the main order of business here is to empty those balls, however long it takes..." She sat down in the bed next to them, running her hand over Ally's cock. It was huge, especially for a horse, but no matter what she tried it just never seemed to get hard. Turning to Marci, she continued, "Well, since they managed to put a foal in you, you clearly know what gets them off. Why don't you give me a demonstration, mare?" She watched as Marci slid into the bed next to Ally, explaining, "Well, the first thing is this nice, big cock right here..." The mare started slowly stroking her hand up and down it, "It actually feels really good for them, but they actually can't cum from it. I guess you could say that's a hardwired behavior. But this still feels good, doesn't it Ally?" Ally gave a small moan in response, and Marci continued. "You see, Ally is a *total* bottom. Even when I do this," she slid down and cupped their balls in her hand, bending down to give each one a lick and a soft kiss, "it feels great, doesn't it love?" Ally nodded vigorously, "And yet, this poor horsie can't cum from them being touched either. But if we go a little lower..." As she watched Marci's hands, Clara interrupted, "So you said this was hardwired. Is that something you can actually do?" She hadn't even known that was an option. "Well," Marci explained, rubbing a finger teasingly up and down Ally's taint, "it's all a matter of adjusting low-level things. For example, we can't change your thoughts to make you think about sex more, but we can make it so your body has more of the right hormones running through it to make that happen. We can't make your brain *need* anal..." Marci slid her finger down further, without breaking eye contact with Marci as she started rubbing Ally's ass, "But we can make it more sensitive to turn it into a more effective erogenous zone." Ally let out a loud, needy whimper at the mare's touch as she continued, "We can't reprogram the computer, but we *can* change the inputs we're giving it." Clara licked her lips---she hadn't really known what was possible before, so she went with something she knew she wanted. Perhaps she would need to have more done, at some point... Distracted by the tightness of the front of her dress, she decided to pull it up and over her head. "Mmm, very nice..." she heard Marci say, sounding like the mare was trying to play it cool and failing. "Thirteen inches of rock-hard elephant," she said proudly. Marci moved to straddle Ally's stomach, facing toward the foot of the bed where Clara was standing. As she grabbed Ally's legs and pulled them back to reveal a hole that looked more like a brown slit than a puckered asshole, Marci moaned to her, "Would you please slam it in and fuck my lover? I wanna see them take it dry. After all, what better way to test your big, hard cock than to blow a load of elephant cum nice and deep inside?" If Clara hadn't been rock-hard before, she certainly was now. "They really, really love elephants, so taking a big one like you dry would be an absolute *dream* for them. And you can make out with me all you want! You get to claim Ally's sloppy hole with your cock, and make sure I can neeever say I'm a straight girl ever again..." She looked down at the horse for a moment, then climbed into the bed on her knees. "Okay, never done this before..." She looked down, a bit sheepish, as she started trying to line herself up with Ally's hole. Thankfully it was a pretty big target, and she pressed the tip up against it. The sensation of pushing the first inch inside was quite intense, but she wanted to do that first to free up her hands. Then, she turned her attention to Marci. Their lips met, and Clara slowly, lightly brushed her trunk down the smaller woman's back, feeling the mare tremble slightly as she did. Unlike before, there was no hesitation this time, and Marci didn't make a single move to pull away. She slid a little deeper into Ally, hearing them whimper from behind Marci, as she started to kiss more deeply. Reaching down, she grabbed Ally's cock with both hands. After all, even if the horse couldn't cum from just that, they could certainly--- As she broke the kiss to look down, Marci said, "Oh yeah, I forgot to warn you. Ally absolutely pours out precum when they're enjoying themselves. My lover is absolutely *full* of surprises. Aaand elephant cock, at the moment." Marci let out a giggle, before Clara went back to making out with the eager mare. Well, there was no point in letting all of that go to waste... Clara squeezed some more out of Ally's cock into her hand, then started to rub it into Marci's breasts. The mare moaned into her mouth, and Clara felt the horse's arms wrap around her and pull her close. As she moved forward, she felt herself slide into Ally until her balls bumped up against the horse's ass. Ally let out a long, needy whimper, and Clara felt their ass clenching and squeezing around her length. Marci pulled back, giving one final kiss, and said softly, "My lover isn't gonna last long stuffed full of elephant cock like this. So go on, pound away to your heart's content. Absolutely ruin that sloppy hole." The mare gave a wink and slid back, burying Ally's face under her soaked pussy. Without a word, Ally eagerly started eating their girlfriend out. Clara didn't need to be asked twice. She pulled out, then slammed back in. The angle was a little off, but the horse's asshole had plenty of give to compensate. It was going to take her some practice to be able to do well at this side of fucking, but she was looking forward to having plenty of that. For now, she decided to settle on shorter, harder strokes that lifted Ally's hips off the bed with every thrust. Almost immediately, she felt her orgasm about to hit. Not being used to the new sensations, they overwhelmed her far earlier than she was ready for. "Oh shit, I'm---" was as far as she got out before she started flooding Ally's insides with cum. The horse let out a loud moan, muffled by Marci's pussy resting against their muzzle. A moment later, she saw Marci lunge forward at her, a pair of arms quickly wrapping around her body in a tight embrace. "That's it," the mare softly cooed in her ear, "Let it all out. Don't fight it, just dump a nice biiig load in my lover, okay?" She could only nod as her orgasm continued. The feeling of shooting cum into someone was entirely new for her, and she was just as unprepared for that feeling as she was for the physical sensations rushing through her. After what felt like forever, the spurting sensation and the feeling of her balls almost clenching (she didn't have a better word for it) subsided, and her body quickly turned to jelly. "Here, let me help you..." Marci said, struggling to support the larger woman as she helped her to lay down on the bed. As she rolled onto her side, her cock pulled free of Ally, still covered in her own cum. With a bit of adjusting, Clara soon found herself sandwiched between the couple. Behind her was Marci, arms wrapped around her and slowly stroking her belly and hip, and in front of her was Ally, arms also wrapped around her and running up and down her back. Looking down, she saw that Ally was completely covered in their own cum. "Wait, did---" she started to ask. "Like I said," Marci replied to her half-asked question, "total bottom. You must not have seen it, but it was totally impressive." Talking over her shoulder, she heard Marci continue, "So Ally, was it a successful test?" Ally nodded weakly, "Y-yeah... test successful..." Clara's original plan to ask had gone out the window by this point, but she would never forgive herself if she didn't ask them. "So, uh, do you two see people after their testing is done?" "Well," Ally replied, "You're... kinda the first person we've ever helped test. So, maybe?" The ball was in her court, and the ice was at least kinda broken. "I'd... like to see you two again, if you're okay with that." Marci gave her a squeeze from behind, "Oh, did you like the idea of a pair of horses pleasuring you? I'm pretty sure you could dump a load in Ally anytime you like. And as for myself..." the mare's hands moved to Clara's breasts, giving them a squeeze as she finished, "I really don't think I can say I'm a straight girl anymore, can I?" "No, I guess you can't," Clara chuckled. Though she was still definitely in the afterglow from her orgasm, she was gradually returning back to the present. The warm fur of the couple pressed against her was soothing after the intensity she had just experienced. "I'd love to see you again," Ally added, "We went into this whole thing not really sure how well it would work, with us being in a relationship and all, but we've both been loving it. No jealousy or anything either, which helps." "In my experience," Clara said, "there are two main reasons couples run into trouble with this. The first is that it is a lot harder to avoid jealousy when both partners aren't there together. And the second is that a lot love the *idea* of it, but get cold feet when the time comes and they feel their partner's eyes on them. As for you two..." She felt both horses' arms tighten around her, and Marci replied, "You can plow Ally's butthole as long and hard as you want, as long as I get to watch." Ally nuzzled up against Clara, "And you also have to give my girlfriend the same treatment. Well, maybe not her pussy until after the foal is born..." Clara thought for a moment, then asked, "You two *are* aware I can still feel myself growing, right? Like, it's gonna be a full-sized elephant dick." "Tight holes are overrated," Marci said, "What's more fun? A hole that's tight but that all you can do is finger it, fuck it, or use reasonably-sized toys on it, or a loose and sloppy one that you can fist, bury your muzzle in, or use very *un*reasonably-sized toys on? I absolutely love burying my fist in Ally and listening to them whimper and moan." "Okay, I just wanted to make sure, because an elephant dick will---" Marci interrupted, "Absolutely destroy this poor mare, making her far too stretched-out to ever be satisfied by stallion-cock again? Make it so all she can do is bend over to show you her gaping, drooling holes and beg you to pick one and ram it in, knowing it's just going to wreck her that much more? Make her lover watch her whimper and moan while all they can do is stroke their cock and enjoy the show?" "Umm, that's a bit more descriptive than I was going to say, but yeah, that." She saw the two exchange a quick glance, and then heard Marci whisper softly into her ear. "But what if sometimes those horses *wanted* to be a pair of elephant-owned cumdumps? Serving, pleasuring, and worshipping every last inch of your body. *Every* inch... This mare will do things for you I'm sure you've only dreamed of..." Clara let out a chuckle, thinking to herself that this could be the start of a very long relationship...