Oliver thought of a large, gray-haired, male donkey.
Suddenly, he felt his ears stretching. He looked at his tightening hands and saw his fingers merging. Being covered in a hard black substance. Keratin!
"Oh god. No!" Said Oliver, as gray fur started sprouting up his forearms.
He felt his face begin to push out, and his nostrils flare.
"Wait! No! I don't want to be hhheee Hhhaaww!"
Tears started coming out of his eyes, as he brought his new hooves up to his quickly expanding face. His right thumb shrank, and disappeared. His last digit he had left of his former hands.
He tried feeling his much longer face with his hands, but he now has nothing but hard hooves. He can't feel much of anything with those!
"Hhheee Hhhaaww!" He screamed, as his changes continued.
Still trying to feel his face, his arms started getting longer. Much longer! Suddenly, they "snapped" straight out, and he no longer has as much flexibility any more.
He started pawing at the air with his newly formed front legs, as his face continued to expand, and his braying getting deeper.
"Oh no! I can't be...I can't be a donkey?" He thought. "Hhheerrgghh Hhhaaww hhhheerrrgghh hhhhaawww." The only sound he'll ever manage to make from now on.
He suddenly got the urge to stand up on his two legs as he was sitting on a log. His body began growing. Putting on more and more muscle and fat. His skeletal structure thickening. All of his clothes ripped off, and gray fur began covering his entire body.
"Please! Help me! Not this! Not a fucking stupid ass donkey," he thought.
Much to the growing horror of his new reality, his body suddenly pitched forward as his arms completely finished turning into legs. His spinal column was lengthening as his chest barrelled outward. He is now stuck on all fours forever! "Hhheerrgghh hhaaaww"
His rear legs were turning more into donkey legs, as his ass expanded outward. He felt his spinal column continue growing! Growing out beyond his back! He felt new muscle form, and the end of his tail bone began to be able to move of its own accord as his tail grew in, covered in black hair.
"Hhheerr Hhhaaww hhhheerrrgghh hhhhaawww!"
His ass continued rising as his midsection continued adding weight and girth. He then felt his penis grow. And grow. And grow some more! Into previously impossible proportions! His balls expanded into grape fruits, as they began to churn like hot butter. Pink flesh turned black, starting from the base to the tip as a new, unpleasant aroma began to emanate from his new donkey-forming member. It thickened into the size of a beer can, even as it continued getting longer and longer! Finally, the tip began to change shape into that of a proper equine. It sent tingles throughout his body, as his penis now stiffened into his very first donkey wood.
Meanwhile, his legs grew longer, lifting his ass into the air for all the world to see. His asshole itself puckered and turned black.
His feet were the last to go, as they too turned to hooves.
Poor Oliver was left standing there,chomping at the air with his new donkey mouth, tongue, and huge yellow blockey teeth. Trying to speak, but braying out nothing but an unintellegible "hhheerrgghh Hhhaaww! Hhhheerrrgghh Hhhaaww!"
Oliver wanted to stand back up on his two legs and run away. But alas, he's trapped on all fours forever.
He then got a nasty whiff of a strong fishy female odour. His penis stiffened to an incredible hardness.
"Oh no. No! Not that!" He thought, as he knew his new body was hungering for a female donkey!
The female noticed it, came right over, and presented herself. With his new, greatly enhanced sense of smell and change in tastests, Oliver could not help himself. That smell! It was both disgusting and enticing at the same time.
He kept telling himself "no! Don't do it!" But he couldn't help it. He went up to her, taking his first steps as a qudraped donkey, and started sniffing her strong odiferous vagina! He wanted to gag. He knew it was a really dirty ass female DONKEY! But it was far too much for his human mind to handle. All the new, strong sensations were overloading his human mind.
He did, finally free himself from his four-legged stance. But only for a moment as his new fat barrel-shaped white-furred belly came down right on her back. Without hands, he couldn't grip anything. So he naturally "locked onto" her sides with his front knees.
"Hhheerrgghh Hhhaaww" still braying in protest, but now in unison with his new female . While he was braying in protest, she was beating in pleasure. But the sounds were the same for both. His expressions of horror indistinguishable from her's of pleasure.
"Hhheerrgghh Hhhaaww hhheerrgghh Hhhaaww hhhheerrrgghh hhhhaawww" they were both braying simultaneously as his huge donkey dick found its proper place.
He felt her SQUEEZE onto his dick with all of her might. He couldn't pull out now, even though he very much wanted to!
He now had the strong desire to really begin humping her, against his best wishes. Which was to not be a donkey, having sex with another actual donkey!
But his bodily needs, once again, won out. He began to pile-drive her with all his might. She began to scream, even as he was already screaming. Despite not being born as a donkey and having a smaller-than-average human penis his entire life, Oliver was really hung as a donkey! Even for a donkey! His huge, hairy black balls were swaying back and forth. Swinging between smacking his own underside, and smacking her backside underneath. Back and forth, faster and faster. Harder and harder. Both were screaming out in unison still.
Oliver felt trapped. Like he's never felt in his entire life. He was being driven by a completely different, and much stronger animalistic biological need. He was still very much aware of himself, even in the throes of the most intense sex of his life. He wanted so badly to have arms and hands. His front legs only ended in cold hard hooves. He didn't have fingers to flex any longer. Couldn't ever squeeze another warm, soft titty in his life. All he could ever do, is now latch onto the sides of female donkeys with his legs. His hooves being completely useless.
He couldn't ever speak again. Not even the simplest of words will ever escape his black, rubbery, slimy lips. His back will never allow him to ever be upright again. Colors didn't even look right. It was all like monochromatic or something. His shadows he'd spot on the ground of himself, made his ears look really hugely obnoxious. He would snort and bray at the donkey--shape of his body, head, face, and enormous ears on top of his head that his shadow is now doomed to forever be cast whenever the sun was high. He'd be stuck outside forever now too. Only a barn as shelter, if he were lucky. Which means tv-watching and the internet were all out of the question now too. They would be anyway, as he could no longer physically control such devices.
With these thoughts intensely running through his mind, he could "FEEL" the heavy restrictions of nimble human movements his new frame will now force upon him. And it made him even more horny and desirous to ejaculate in this female donkey.
All the sudden, an explosion of all the colors that have ever existed blew up like fireworks In his mind. The female screamed out her brays. The intensity shocked Oliver so much, that he could only slightly tremble with his mouth wideopen, and his huge fat, slimy donkey tongue was licking the air. He was no longer braying. He couldn't even do that. His hugely sensitive donkey cock was hammering away inside her, over and over again. So much thick, yellowish donkey semen was being ejected, that it began to spill out of her vagina and land on the ground underneath the two.
Finally, SHE came after his fourth or fifth round of this one orgasm of his. Her juices covered his penis, and also spilled out. Mixing and mingling with his thick, pudding-like donkey cum.
After several minutes, it began to subside. Her vaginal muscles no longer holding his dick hostage. She moved forward to begin munching on the lawn, even while she was still trembling in ecstasy. A human-born donkey just gave a donkey-born donkey the greatest sex of her slutty donkey life.
For his part, Oliver fully expected to stand up on his two legs and carry on as a human. To run as fast as his two legs could carry him to the nearest shower. But alas, as he got off the back of the female he had conquered, he felt his balance was way off. He landed on his......front.....LEGS....with HOOVES! On the ground! No shower would ever be waiting for him. She had just christened him into his new dirty, smelly form!
For some reason, his trembling foggy mind couldn't understand why he was on his hands. He tried standing again, but was quickly forced back to all fours.
"What the fuck!?" Hhheerrgghh hhhaaawww" was the sound that escaped him.
"Heeeergghh Hhhaaww!" He tried again. "Hhheerrgghh hhhhaawww," again with his deep-throated braying.
"No. No. No! It can't be! I'm a...donkey! I'm an actual fucking....DONKEY! He said I would only ACT like one! Not BE one!
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww!"
"No...no....NOOOOOO!!!" Screamed his mind. He couldn't talk! "
Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawwwHeeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww"
He stood there for a while, trying to grip the earth with his no-longer-existing brays, just braying away at the cold, empty air with his pals standing around looking at him in shock.
All this time, Oliver forgot about his friends. He was far too distracted to even notice they were still there.
"Wait. I thought they also turned into animals?"
Suddenly, he gained a little bit of knowledge out of nowhere. He knew every 12th person to use the rock would be stuck in their form. Forever! Never to be able to speak, or act or be human again, except in thoughts only.
"No! It can't be! I can't be a fucking donkey for the rest of my life!"
"Why won't Oliver change back?" Asked Jake.
"I can't believe he had sex with a random Jenny?" Giggled someone. "That was fucking gnarly!"
Oliver remembered he was with his group of friends, stretched his long neck to look back behind his huge gray body, and saw them staring at him in disbelief! He saw Jake standing just behind his own own huge donkey rump. Oliver froze if fear. His friends just witnessed him having sex! With a donkey! As a donkey! He could only stand there, open-mouthed in shock, fear, disbelief, and utter shame. He didn't know what to say. Not that he would ever manage to say it!
He wanted bolt away, but his legs were like stone. He couldn't move. The fear was too great.
"Maybe that's why he didn't turn back? He had sex in his form. None of the rest of us did."
Oliver knew that was untrue. He wanted to tell them the truth. "Heeeergghh hhhaawww!"
"Shit! I can't speak!"
He tried again anyway
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww"
"What's he want?" Asked someone.
"Shit if I don't know" said Jake.
"All I know, is that Oliver is a fucking pervert. He deserves to remain in that form."
"Yeah, let's go guys. I don't want to ever know him again. He's a total freak.
"Wait! I can explain..." He tried saying. But it was useless.
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww"
Oliver wanted to go with them, but his shame was far too great.
Shortly enough, he was left to his own devices.
"Shit! Now what?" He thought and brayed sadly.
"Heeeergghh Hhhaaww"
"Dammit! I can't fucking speak!"
""Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww"
He just stood there, on all fours. Staring at his rump from both sides. Occasionally his tail flicking into view. Braying now and again. Feeling his new teeth with his new dirty slimy donkey tongue.
He would occasionally get the strong urge to just stand up on his two legs and just go home.
'Home. I'm never going there again..."
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww," he brayed again. Just to once again conform he will never speak.
"What would mom and dad do with a fucking donkey anyway? And how in God's name do I let them know it's me. Their son!?
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww"
"Fuck. Fuck, fuck, fuck! If only I could speak!"
"Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaawww Heeeergghh Hhhaaww hhheerrgghh hhhaaawww hhheerrgghh hhhaaaaaaaawwwwwwwwwww!"
The last haawww a drawn-out sigh.
"Now fucking what!? What the hell am I supposed to do!?"
He was now feeling pretty hungry. Then he finally started moving. His head dipped down, as his jaw opened. He smelled his and her sex that had dribbled to the ground. He opened his mouth wide. "Wtf!?" He thought, not controlling his own movements.
And closed his jaw around a slimy clump of grass.
He could it! The taste of his AND her cum!
"Oh! Gross!" He wanted desparately to gag. To spit that nasty mix of grass and donkey cum out of his mouth. But he stood there,chewing it. Rolling it around his tongue. He swallowed. And went for more!
He bent down for yet another bite, and he began pissing! His long, unwieldy penis began spraying gallons of yellowish-green acrid donkey piss like a firehouse. It coated the cum-coated grass and his chin.
"Wtf!?"
Then he began shitting as well. Large piles of manure dropping out of his behind. Meanwhile, he he physically continued to nonchalantly graze like the unintelligent beast his mind was inhabiting.
And that's how he would spend the rest of that day. And most of his waking hours for the rest of his short, miserable life. Grazing. Just like with having sex, the biological needs of his body would take over, despite his protesting human mind that was behind his large, dull, unintelligent-looking eyes. An equine body of his size, requires lots and lots of grass.
Most of the day he wasn't eating, he would be forced to plow endless fields during the spring months.
The few hours he did have to himself, he would frequently try to escape his body. He would try to speak. Try to use his hands. Try to stand upright. Oliver would never, ever get used to the donkey body his mind and would was trapped inside of. And often times, it would unintentionally make him horny. Which would cause him to lose control of his body once again.