FSE

Furry search engine

formerly SoFurry search engine

(FtM Donkey TF)

Chastity took care of the cows on her own yet another day on the ranch. She had her friend to help her normally but she was on a bit of a break, having fun with this old magic tome she found in some inheritance she received. Most of the cows wandered back toward evening on their own once the warm sun started to wane, but Chastity still needed to usher in the stragglers, and cow's are not great at following directions. And among all the bovine, one single mare shadowing Chastity the entire time, annoyingly close behind her. There was a few times Chastity turned around too quickly and the two practically walked into one another. The mare was Fate, and was always looking for attention, even when it was clear Chastity was busy doing something else. When Chastity was locking up all the corrals to make sure no one wandered out, Fate snuck up behind her and nipped the back of her pants, trying to pull them off but the jeans were held in place by a belt and Fate almost yanked Chastity right off her feet, not realising her own strength. Fate would be locked up too but Chastity already knew she was too smart- she would undo the latch on her corral on her own anyway, so there was no point closing it. Chastity scowled at the mare for continuing to annoy her, asking what the heck she wanted and blushed as she seen the mare was also rubbing her pussy on one of the wood posts behind them. Fate was in heat, and there was no stallions. There was a bull, but there was absolutely no way a bull could mount a mare, she was twice as tall as he was! The woman and mare stared at each other blushing for several long moments before Chastity huffed, looking away.

"I don't know what you want me to do about it. You know my toy back at the house is way too small. You can be a horse all you like and enjoy your time off however you like, but I ain't helping with.... THAT."

Fate gave a frusterated huff, blasting hot air from her huge nostrils before turning around and before Chastity noticed, turned her giant muscular rump to her and slammed the poor woman up against a stack of hay bales, pinned by the horse pussy. Horse pelt was fine enough that it hid absolutely nothing, and if anything accented the round curves of muscle with its sheen. Fate's butt alone was as big as Chastity's entire body and solid with muscle, the rear slopes gentle enough to leave her big puffy anus and fat moist labia in plain view under her long tail that was flicked to the side. Fate turned herself into a mare as a vacation, not realising she was going to be going into heat, making it rather difficult to relax. Her appearance was caught between a horsified version of her true self and the image of a horse she tried to picture while changing, causing her pelt to be dual colored. Her butt and most of her back legs was dark brown, with black anus and pussy, then her body was white, her lower front legs were dark brown, and her nose and ears were dark brown, but her eyes and the sides of her head white. Her average length mane was dark brown, and braided, her extremely long tail was white and had a brass tube on the base to help her move it away- since the weight of the hair would make it hard to lift off herself otherwise. 90% of a horse tail is just hair after all, the actual tail itself is tiny. The magic pendant she wore when she turned became part of her horse form as well- it became a ring of gold fur around her neck joining to a large amber oval embedded in her skin. Being pinned back there, Chastity did not see the amber flash with mana as Fate cast another spell.

Chastity managed to slip down between cheeks to escape under Fate, shouting at her angrily and giving one of her huge butt cheeks a hard slap in punishment. Chastity demanded she go to her pen and closed up the barn behind her, going back to the house to try and forget about all that. Her mouth to her chest was moist from horse pussy! Yeck. After she got clearned up, she went to bed and fell asleep easily after a long day of work. Her dreams that night were strange though, no doubt influenced by her encounter with Fate in the barn. She kept dreaming of working on the ranch but then encountering horse butt after every turn! She kept leaving to go somewhere else but then another horse appeared with its butt turned to her. Ugh! Even in her dreams Fate manages to annoy her! She isn't going to sexually gratify her! Her vacation doesn't mean more work for Chastity. She will look after the ranch solo, but she isn't babysitting Fate ontop of that. Unknown to Chastity, her clit grew in her sleep, extending out a bit as her vaginal passage shrank and her labia fattened a bit.

When Chastity woke up, she certainly noticed when her erect clit rubbed the soft bedsheets. "Humph. Well, I take care of my own problems unlike Fate. I still have hands."

Chastity reached under the bed to grab up her dildo and relaxed back into bed to put it in. It felt much bigger in her today, because her pussy had shrank. As her pleasure increased and she squirmed on the bed in the sunlight filtering through the curtains, her pussy started to shrink more. Chastity thought it was just clenching from pleasure, but the fit became too tight. Her clit continued to fatten up and lengthen too, and unnoticed by her yet the hood started to fuse around it. Finally becoming too tight to continue Chastity was forced to pop the dildo out, and the moment it did two more objects popped out as well. Two balls emerged from her into her swollen labia, which then fused together as the weight of the balls brought them together. The labia had become a scrotum, and the balls were her own transformed ovaries! Chastity blushed hard and balled her hands into fists as she examined herself and immediately knew Fate was to blame. On her crotch was now a tiny penis and balls! It looked like it belonged on a child. What was the point of giving her this!? It was too small to bang a horse. Hell her entire arm might be too small. And her thoughts were unaffected. Fate was still a mare so asking her is pointless, she cannot speak without human vocal chords. Did she think doing this was going to rob her of her ability to have her own fun? W-well it wasn't! Chastity could still work with this... she supposed.

Using just her index and thumb she gently took the small penis that used to be her clit and started to work it. It did not look erect outwardly but it was. As she pumped the tiny thing she still felt pleasure building, since she had already worked herself up with the dildo before the change. The scrotum started to relax a bit more as the flesh grew. The shaft started to stretch a bit farther and the glans became more defined. Soon Chastity was using two fingers and her thumb, then three, then her whole hand. Her balls slowly swelled up as the sexual tension inside built, going from the size of grapes to chicken eggs. Reaching a size more appropriate for her body, Chastity reached her first male orgasm, arching back in the bed from pleasure and fired three ropes of white up her stomach and into her own cleavage.

Chastity cleaned up and settled down, going about the rest of her day as usual, pretending like nothing happened around Fate- not wanting to even give her the satisfaction of knowing her spell did anything at all. After a long day of work though, Chastity was noticing her pants were tight in the crotch now, hiding an erection. These pants were not meant to contain a male package so the tight fit and all her movement must have accidentally woke it up. She tried to just ignore it though, at least when Fate was looking. When Chastity put the cows to bed, she shook her head at Fate in her own pen, shaking her butt at Chastity as if to entice her. A few fat veins could be seen at the edges of the large horse pussy, and a flash of pink as her golf-ball sized clit parted the curtains with a wet sound. Chastity was a bit mesmerized looking at the clit. It was huge and throbbing. It was actually vaguely heart-shaped to as if to be extra inviting. Shaking her head she just told Fate she should just turn back human if she wanted to get off, but Fate remained a stubborn mare, so Chastity remained adamant in her lack of help.

When Chastity returned to the house and got cleaned up and immediately took her pants and panties off to let the trapped dick out. As soon as she climbed into bed she wrapped a hand around the member and started to masturbate. She thought about how needy Fate was, but foolish for stubbornly being a horse still. But those thoughts very quickly degraded to remembering what that huge throbbing clit looked like wedged in those thick pink folds at the heart of the black mound. So caught up thinking about the horse rump and her own pleasure, Chastity did not even notice her penis getting larger. Starting around 6 inches it stretched to seven, then eight, then a very impressive nine. Her balls swelled a bit larger just as she climaxed and she felt the rush of cum through all her inner workings like it was extra pressurized. The veins in her shaft got a bit thicker and so did the shaft itself on climax, sneaking in a final inch to give her a nice round ten. Chastity lay there panting for a bit before looking at her package again. Having experienced a male orgasm that morning she figured she could be more careful, but this one was gigantic in comparison so she ended up making a mess of herself again. Not only did it work its way between her breasts, she even got a bead or two of white into her hair, forcing her to get cleaned up a second time. The weight of the new package was immediately noticeable as it flopped around soft. It was big... real big for a human. Still a joke to a horse though. She felt extremely tired after the orgasm and fell asleep the moment she touched down on the bed again. Again her dreams were of Fate's huge muscular bottom. The heavy salty musk from it saturated everything in her dreams. Was Fate making her more attracted, or was it just the fact Chastity had a dick now the reason? In her dream, Fate gave her a blowjob with her long horse mouth and huge soft lips.

Chastity woke up with a raging erection after having such erotic dreams against her will. She groaned in the warmth of the sunlight filtering in and grabbed her cock again in one hand and a breast in the other, but paused a moment. Would it grow again? It seemed like every time she touched it, it got bigger. It was already huge. She started to slowly piston her hand on it without even realizing, and then by the time she consciously noticed it felt too good to stop. As the pleasure built with her speed she ended up letting go of her boob and grabbing the phallus with both hands, thrusting her hips up into them. As they bounced up and down her balls grew again, more noticeably this time and the skin of the scrotum darkened a bit, making it look a bit purpled. Her dick stretched longer and a bit thicker yet again and the skin at the base thickened and darkened. Her ears felt prickly and against her hair she could tell they were moving on their own...getting longer! She wanted to check but she was so close to climax she couldn't stop now! The muscles in her lower body started to spasm a bit like they would when she was having female orgasms. Her legs went a bit numb as her feet started to stretch out, the nails thickened and darkened as her toes started to fuse together! Her cock tightened to stone hard as she once again felt a huge blast of cum coming up, and in a brief window of memory, realized she was going to make a hell of a mess... again. To avoid the mess she quickly thrust her hips forward and popped the head of her own dick in her mouth just in time to catch the several thick jets of hot goo in her throat! Her dick must be around thirteen inches long by now, and easily reached her own mouth. It was already big before- it was world record big now. Looking down the length of the shaft as it throbbed hard into her mouth, she seen the coloration of the shaft was a bit purpled too. Psudo hooves, huge dark cock, big ears... that damn Fate was turning Chastity into a horse?! The mana was being projected from Fate's necklace though, so rather than take a minute or two, the transformation was much slower. Once again Chastity spent quite some time catching her breath. Licking her lips she also noted the cum did not taste bad at all, she always thought it would.

Chastity did not even need to put her full weight on it to know she could not walk on the flat of her feet anymore. Her toes could not move individually anymore, but her feet were only halfway turned to hooves still, so she also could not walk like a horse without shoes or the soft skin of her feet will get cut on the ground. She had to sort of shuffle her feet along or her shoes would just fall off, because only the front part of what was her foot before could fit into them. Chastity also needed to wear a skirt today, there was absolutely no way she could stuff that meat log into any of her pants. She immediately went to see Fate. Chastity already took a while to start up, so she was starting late and just ignored the other animals to see the stubborn mare first.

"You little witch! You're trying to turn ME into a beast? Stop it right now!"

Fate looked at her half lidded in a deliberately bored expression.

"Turn me back! If you think I am going to have sex with you like that, you are delusional so you might as well undo it." Chastity crossed her arms with a stern look.

After several long moments, Fate finally sighed, blasting Chastity with her hot horse breath again. She walked up to Chastity, looking her in the eye a moment before nudging her with her large horse nose to direct her to turn around.

"Huh? I need to turn around for this...?"

Chastity turned and Fate bent down and bit her! Fate tugged backward a bit and almost yanked Chastity off balance again, but not by her clothes this time! Chastity looked back in panic to see a large tuft of hair growing from above her ass she completely neglected to notice till now- and Fate already had it in her teeth. Fate kept tugging against Chastity's protests and a surge of feeling went all the way up her spine each time, as the tail grew a bit longer, and longer. The hair did not spread, so the new length Fate pulled out of her was nude. Chastity tried to pull free but any tugging from either of them only made it still longer. Fate finally let go, causing Chastity to launch forward into the hay bales since she had been struggling in the opposite direction when Fate suddenly stopped. When she looked back Chastity did not see a horse tail. A tassel... that is the tale of a donkey! Oh it wasn't enough to turn her into an animal, it had to be an animal still under Fate! It was clear she was not going to turn her back till she got her way. Before she could stand back up off the hay, Fate quickly stuck her long face between Chastity's legs and lifted up, making sure Chastity could not properly get her weight onto her proto hooves.

"W-what are you... doing. Stop..." Her voice became small and weak as she meekly protested with no conviction at all.

The warm breath from Fate's huge nostrils was direction on the back of Chastity's balls, and her cock returned to full erection against her will. Fate's huge hot tongue reached out around the balls, licking from front to middle, causing Chastity to shiver from the feeling as her dick twitched. She was panting now, blushed bright red and a bit dizzy with arousal. Her ears got a bit longer and started to grow a light fuz on the back. Chastity clawed at the hay, trying to pull herself up away from Fate before squirming around to face her in a halfhearted escape. Fate just bowed her head and brought it back up, under the skirt fabric. Chastity froze at the feeling of the soft fleshy nose running up the length of the twitching shaft, and then the mare's lips wrap around it. It was just like her dreams! Fate's horse mouth was more than long enough to easily encompass even this huge dick, and her large tongue felt heavenly as it licked the underside. Without even meaning to, Chastity started to thrust along with her sucking. The dick started to stretch a bit longer still with her thrusts, as if trying to match the size of its divine prison. The dense skin at the base started to develop thick folds as it became the thick equine sheath it was meant to be, starting to fuse to her underside. A medial ring started to form as the shaft throbbed a bit thicker and the glans became almost painfully engorged with blood, forcing it bigger and wider, stretching and deforming its shape. Less mushroom in form, more like a dish, more like an equine. Her feet twitched and the muscles flexed from the feeling of approaching orgasm and the nails continued to grow and fuse together, finally becoming proper hooves. Her legs stretched and the muscles bulked up huge as they also became more equine.

Chastity's eyes were wide with pleasure but looked at nothing, and she rocked in pleasure, grabbing the sides of the horse head as her pleasure hit a point of no return. "Hah...hah...haaaagh....haaaw! Heee!" She made a hard inhale in surprise of the sounds she made, but before she could really think about it her orgasm hit.

Her balls darkened and swelled even bigger as she blasted more and more cum into Fate's eager mouth. Fate swallowing the cum as soon as it entered caused even more suction on the dick making it feel even better, and the urethra started to project a bit from the head. She came what seemed like twice as much as the last time! Fate did not release the shaft till it started to slowly go soft again, waiting patiently with the heavy meat resting on her tongue like a soft moist bed.

Though still out of breath and dizzy, Chastity tried to fix her clothes back in place and scoff at Fate in a vain attempt to regain control of the situation. "W-well. If you want to give me pleasure that is fine, but I am not giving you aaahny!" Fate grunted angrily. "Well I already told you, if you want me, turn back into a human! I am not doing a horse. Suck mheee off if you want. Hell turn me into a beast! I don't care, I am not doing a horse. So like I said, turn me back any time now. Bechaaawse making a beast of mheee will not benefit you at all."

Chastity stormed off to let the animal out and resume her normal days work... as normally as was still possible anyway. She had hooves now, so her shoes were fully useless. Walking on her hooves was a bit awkward, but didn't take that long to adjust to. All other hooved creatures walk on four legs, so walking on two with hooves was never going to be the best. She noticed her clothing was really tight on her as well now, her entire body must have grown a bit during that last session. She noticed her hands were stiff and a bit numb as well, but did not visibly seem any different for now. Her dick kept trying to stand on its own too, which made things awkward- especially since she was trying to seem as unaffected as possible in front of Fate. Even with the skirt, the dick was so huge even at half mast it lifted the front of the skirt almost completely horizontal. Pulling the fabric out like that put friction on the glans though, which caused agonizingly pleasurably little jolts, causing her balls to bounce and the dick drooled pre. Having this go on throughout the day, by lunch she was already panting, and not from work. She even caught herself thrusting into the skirt a few times, glancing back toward Fate to see if she was watching. Chastity's frustration built, and became more aggressive toward Fate. This was her fault after all! Chastity did not realize it was a side effect of the testosterone being created in her new large balls. Fate remained at a distance, watching with a rather impartial look, which in Chastity's eyes was a mocking stare. She groaned with need, ignoring and forgetting chores left and right because of her hormone driven haze. Leaning against a fence, she found herself thrusting her cock against one of the posts without meaning to. The wood was abrasive, but her cock craved the touch. She pulled away, turning to be leaned on the fence instead with her cock aimed at the sky, the skirt unable to cover its length. Though right by the road, anyone at all could drive past and see her, there luckily was never many people this far out from the city. She grabbed the throbbing shaft and started to thrust into her hands frantically. Pre dribbled out steadily, and her balls grew again- the scrotum now completely black. The muscles in her arms started to throb from the frantic work on her dick. Even both hands together did not seem like much of anything compared to the sheer size of the cock. She couldn't even suck her dick at this point, it would need to bend back a good ways to fit into her mouth and it was hard as stone- nothing was going to bend it. The muscles started to bulge bigger, filling and starting to rip her sleeves as her arms also got a bit longer. Her fingers did not respond properly, and from the wrist down the bones started to merge together internally forcing her to loosen her grip on the shaft. Her entire body was filled with uncomfortable heat and seemed to pulse with pressure, growing a big bigger. As her entire body grew her clothing strained to a point where she could not remove it even if she wanted to- the only way out was to cut it off. Her thrusts and grunts became even more desperate as her hands could no longer grip at all and quickly transformed into hooves, though she kept them together to thrust between. She tried to use them to push her boobs together to tit fuck herself, but it wasn't enough. The percentage of cock contained between them was just too small. Finally she came so large and heavy the fence she leaned on broke, causing her to tumble to the ground and several rips to burst into her clothes on impact. She brayed weakly in desperation from her enlarged nostrils.

Finally Chastity stormed over to Fate, panting and unintentionally letting out a few soft 'hee's. "Ok, you want mheee to fuck you?! I'll faawck you!"

Though it seemed like giving in, in Chastity's degrading thoughts, this was turning Fate's want against her. Fucking her to dominate her, make Fate Chastity's property! Nothing for Fate's hungry cunt, no, she did not deserve that. Walking around behind Fate who remained standing calmly, Chastity slapped her ass hard demanding she lower it for her. Their size difference was still tremendous, Fate's ass was higher up than Chastity's head. Being turned into a donkey did not really help that- the biggest donkey was still smaller than a horse. And Fate was a real big horse. Grabbing the huge muscular cheeks, Chastity aimed the bobbing head of her cock and then yanked backward as hard as she could, pulling the unbalanced mare over with her. Chastity let out a loud heehaw, and Fate a high pitched neigh of surprise. Chastity fell back on her ass, with cock already lined up, Fate fell back into a full sitting position, directly onto the dick, slamming it fully in at once. She wanted vaginal, but anal felt fine too, and everything was ultimately going as intended for Fate, in spite of what Chastity tried to tell herself. Fate lifted and slammed down her gigantic ass on Chastity who thrust up as well as much as she could to the wondrous feeling. Fate sitting on a normal human's lap would probably crush their hip bone like a dried leaf from her weight alone. The elastic waist of the skirt ripped and flung itself back as Chastity's hips expanded, and the muscles grew in her legs and butt, causing her rump to grow tremendously. The larger it grew, the more of Fate's muscular ass fit into the pocket of Chastity's crotch, making it feel better and better. Her torso broadened as she grew, causing it to change shape. The muscle growth started to swallow up her breasts out of existence. Her bra snapped off from the thickness of her chest, then her already ripping shirt exploded to bits, leaving only a few tattered strands hanging off her. The soft breathy brays escaped Chastity"s mouth like a sneeze or cough- a sudden explosion of sound from in her chest she could not stop and too strong to hold back. She flushed in embarrassment from them but she needed to continue to fuck Fate to show her who was boss! She wasn't going to be made a toy! Fur started to grow over her like a shadow, a dark stripe across her collar.

Fate sat fully on her, pressing down with her tremendous weight, just feeling the cock twitch inside of her for a moment. She could feel the desperate attempt at humping from the donkey, and its breathless brays and knew Chastity was consumed in lust at this point. Far too gone to turn back. Now she knew what bestial heat felt like, hmm? Fate lifted up and off Chastity, standing up straight again, glancing at the donkey for a moment as it scrambled onto all fours as well. There was a bristly line of hair forming down the back of her neck now as well, and her top row of teeth were now way too huge for her mouth. Her ears were a foot long each. Chastity kept lifting her front legs up in small hops, mind too clouded with lust to even realize what she was doing. She was trying to mount. Her instincts were telling her to mount, but the remnants of conscious human mind did not understand.

Fate lowered herself to the ground and then playfully kicked herself over onto her back, with all four feet in the air, her rock hard clit parted her pussy lips for her, and the musk of the large thick cunt wafted over to Chastity by Fate's tail. No longer remembering or caring that she was trying to not give Fate what she wanted, Chastity dashed over and thrust into the waiting pussy in one go, covering Fate's underbelly with her still growing body. Her limbs got longer, her body larger and hairier. The pleasure pulsed through her entire body because of her changes exciting the nerves. Her balls got a bit bigger and so did her cock, properly filling the slick pink inner folds. Chastity thrust in with long, powerful motions, a bestial force. Her nose and teeth became way too huge for her face, pulling her face out with them, stretching out into a more equine shape. Her ears grew a little bit more, and her neck tensed and grew tremendously with soft popping sounds from her spine as it lengthened. As the last traces of a human Chastity vanished, her pleasure approached the point of no return and her iris darkened as her pupils stretched horizontally. Chastity's mind went blank and Fate lulled her head back in bliss as they both let out loud bestial cries in orgasm.

Chastity slowly started to come back, her thoughts fading in as if waking up from sleep, without having gone to sleep. She was resting draped over Fate's huge rump, and Fate was laying on her side.

*W-what... happened?*

*Mmm, you just started your vacation, I believe.*

Chastity snorted angrily. *Omg, I hate you!*

Fate let out a nicker that was almost a chuckle. *You have a funny way of showing it.*

Chastity thrust fully in again aggressively, just so Fate would stop talking.