The two boys lay there on the floor, bodies slick with sweat and cum, breathing heavily.
"You...you crazy..." Tom began, "You crazy bitch!"
"Well, I already said," Kate shrugged, "It was an ACCIDENT! God, you've NEVER made a mistake?"
"Let me get her," said Matt, "Let me..." he raised his hand, balling it into a fist, only to notice something strange. His nails were blackening, thickening, seeming to spread over his fingers.
"No..." he gasped, "Aw no, no, no...TOM!"
He turned to his friend, holding up his two steadily hardening, blackening fists, "Look at me!"
Tom gasped, "Aw, man, aw shit..." he reached out to help his friend, wincing, "Me...me too. I can't open my hands."
"Stop this!" Matt turned to Kate, "Please, there...there must be some spell, something you can do..."
Kate shrugged, "I'm sorry, guys. Really. You're...you're both really nice. It's a shame. We coulda used more guys like you in this cesspit world. But if it's any consolation..."
Tom moaned monstrously, throwing his head back, "M-my cock!"
"...you're gonna have lots of time for fun," she finished, lips quirking into a mischievous smile.
Tom's cock had shot up to attention, increasing in length and girth as it moved steadily up from his groin to his chest.
"Holy..." Matt began, before he was wracked by the same sensation, pulling him down to clack on the two hooves where his hands had been. He found himself over Tom, looking down into his gasping, convulsed face.
"Tom...Tom, buddy...you okay?" he managed.
"That...that a joke?"
"Not a..." he moaned, "...good one."
"I'm so hard," Tom panted, "I...I have to..."
He scrambled with his hooves, but of course could find no purchase on his cock. Matt looked down at his friend, noting a sheen of gray-brown hair beginning to spread over his chest, his arms.
Matt forced himself to look away from Tom's dick, "We...we have to stay. Can...can you do that?"
"I...I think..." Tom nodded, "Help me, man."
Matt linked his clumsy arms through Tom's, and together they attempted, unsteadily to get back to their...
"ARGH!" they cried out together, both bowled over at once, a sudden new pressure attacking them from within.
"M-my ass!" Matt groaned, "Tom, it's..."
"I know," Tom's eyes were wide, "We're sprouting...fucking...TAILS!" the word got swallowed by a frenzied bray, as tails burst from each of their rears.
"Oh, God, this is fucked up," muttered Kate, eyes wide, yet not looking away.
"I...I swear..." Tom muttered, "I am going to...KEEEHAW!"
And the worst part was Matt understood, "MeeeHAW too."
"God, man...look at us."
Matt did so, looking up and down at the both of them, "Well...we've got nice ears,"
Tom reached up with one hoof to paw lightly at his stretching ears, "Man, I...I don't know if I can..."
He cried out again, "Aw nonono...my fucking FEET!"
"Mine too," Their toenails were undergoing the same process their fingernails had underwent, their feet hardening, smoothening out. Matt watched as his toes flatted, merging into one singular black mass.
"Matt..." Tom began, "Matt, there's got to be something. Some...some spell or...or anything. I...I can't beEEHAW!" he looked up at him, eyes watering, "I can't be a donkey, man."
Matt nodded, wracking his brain, trying to think. But there was so much pain...and his cock was throbbing now, so much it was painful, just inches from Tom's own.
"Let me...let me..." he tried to go over in his mind, all he knew, all the books he'd ever read, everything he'd ever perused on the subject, trying to think, to find some way out of this.
"My legs..." Tom panted, "So...so heavy..."
He began to lean forward, bending over. Matt realized what this meant, "No. No, man, don't, you've got to fight it, you've got..."
"ARGH!" Tom dropped on all fours, "Matt, Matt help me, I...I can't thi...HEEHAW!"
That broke him. Matt fell forward as well, "I'm...I'm sorrEEHAW!"
He could feel his face stretching out, forming into a muzzle, looking at the same as it happened to Tom across from him. His mind was fading, all he knew, all he'd ever learned, every human memory...even Tom's face, the way it had been, the way HE had been...
When it was all over, Kate looked over at the two donkeys, "God, that was...that was REALLY depressing."
She sighed, "Oh, well..."