Matt was about to answer when, after having tried to avoid looking to save his friend's dignity, he saw Tom's cock dripping out watery jizz as it was lip under his swelling belly. It squirted a few last times as it shrunk right along with the minuscule testicles into a growing slit.
"Ohhhh, AWWWWW," Tom brayed, unaware the heat he was experiencing- a welcome break from the pain- was actually his female sex blooming. The dark leathery lips and swollen vulva meant this was now a co-ed dorm.
"I'm so sorry Tom," was all Matt could saw, watching the hairy, ropy tail start to curl around while teats protrude at Tom's waist for the udder starting to form.
Tom tries to catch his breath, his mind swirling and being bombarded by hormones and strange signals from his back side. He tried to steady himself on his hands, which were still unchanged, but his arms were growing sore and soon Tom was clenching his teeth as the bones started to shift and change. Tom feels weird and shutters as more fur growing over his body and his teats are starting to hang.
"Tom? Are you still there?" Matt asked, coming around the side of his friend.
Tom looked over, his head and neck unchanged as of yet but his face was red and covered in sweat. "Why did I drink that? I'm so scared, dude. My body feels so weird, I," Tom lowered his head, trying to stifle another bray. "I can't feel my dick, dude."
The pale look in Matt's face was almost answer enough. "Dude, I don't know how else to say this but, you're turning into a jenny, like, a female donkey, very quickly."
Tom yelped again. He looked down, as did Matt, as his hand and the merging fingers and darkening nails.
"No, no, no," Tom said shaking his head. "I don't wanna be a donkey!"
It didn't stop his hands from becoming hooves, his ribs and chest joining the rest of his torso in furry, donkey wrappings or the fur growing up to the base of his neck.
"Try to resist it? I don't know dude," Matt turned to the case again. "I don't see anything but other animals!"
Tom closed his eyes and desperately did try to stop it. To will himself back to humanity. To masculinity, if nothing else. Instead, his bowels churned and his tail lifted. Tom tried desperately to stop it but the animal didn't care. Matt smelled it and heard it piling up before he saw the turds rolling out of his friend, soon followed by the hot piss of a jenny in heat.
He could only whimper then as the base of his neck thickened and a series of pops followed the lengthening of his neck. "I'm gonna be a donkey," Tom cried as his head gained a higher and higher perspective. "Tell my mom I'm sorry," he managed, feeling the fur prickling up and his hair tugging back as his mane formed. "Don't tell her I'm a donkey or, or," the ringing and burning in his ears only meant they were starting to grow while his jaw started to tighten up. That and intrusive thoughts were now taking over. "Or tell my last though was being mounted," he felt he face start to push forward a little, his glasses finally falling to the ground and breaking, "and bred. HAWWWWWWW!" he finished as he face pushed out all the way until Tom was gone.
Left the tattered and soiled clothes of his roommate, Matt now had a jenny in heat and no idea what to do next.