Stunned, either friend could only stare stone faced at the girl who seemed eager for them to get on with it.
"Come on, I don't have all day," Kate said with a glance to her phone for the time.
Matt shut his eyes, mind unable to push away any thought of an animal as the question was at hand. There was flash of something and Matt felt a twinge down his spine. The chill he felt made his skin prickle up. He crossed his arms and tried to rub himself warm, quickly working up a sweat all over. Kate took notice as well as Tom.
"You okay, man? You didn't... think...?" Tom asked with concern.
Matt's lips quivered and were blue, but his growing ears and pricks of horns at his forehead give an answer.
"Oh my," Kate giggled, not noticing Matt's head but the swelling bulge in his pants.
While Matt was raising his hands to touch the still growing tips of his ears, he looked down at the sensation of a throbbing warmth wasn't something he could ignore. The still growing sight of his groin caused him a moment of dizziness.
Dropping to one knee, Matt rubbed his forehead where the simple budding horns were now pushing out to several inches. "W-w-what's happening to me?" he asked, already knowing the answer.
Embarrassed to but feeling his pants would explode if he didn't, Matt undid the front and attempted to pull his pants down. Once loosened, the rest tore down the front and he was fully exposed to the room. Tom and Kate gasp at the sight of Matt's deformed and bestial manhood. His testicles had swollen to the size of soccer ball each, in a dark sack and attached to a somewhat formed sheath where his blood red cock was longer and thinner, and bovine.
Matt's cock was leaking a watery mix that was what was left of his human seed.
"There you go. Just let it happen," Kate encouraged, seeing Matt's torso gaining girth of muscle and fat with every deep breath he took.
"This can't be happening, this can't be... happening," Matt said in a chant, covering his face as a numbness took his nose and jaw. Feeling his face start to push out despite his every effort to keep his human only made Matt's heart beat faster.
"Oh you're definitely changing into a, what, bull? I'd say bull, and you're going to be making a one way trip, sadly," Kate said with a half-hearted smile.
Matt looked to Tom who was powerless to do anything but watch and try to keep his own mind clear despite a looming fate.
"It's not stopping," Matt said, letting his hands down from his face to reveal the very bovine snout and thicker looking brow. Matt staggered with the weight of his upper body while also being oddly tickled by a tail sprouting over his ass. "Got to... stay on both.. fe-OoooOO!" Mat bellowed before falling forward onto his hands, his shirt ripping to reveal his stockier frame and larger size. There was a tugging at his hips that forced Matt to keep his weight forward, where he could only watch his fingers begin to merge and darken into what he knew would be hooves.
There was a conflict of sensations within him as his body kept racing towards being more and more bull and less and less Matt. His sheath continued to grow up his sprawling belly while his pendulous balls bounced between changing thighs that took on a bull's frame. Flashes of cow's, grass, and letting go hit him while he trembled at the weight of his testicles, which churned with activity. In the end, it was the gurgling in his bowels that took him. Matt's asshole opened without his control and after a messy spray, wet cowpies plopped from his ass, collecting over his old clothes and spreading to his head as he felt his body closing in around him.
"Dude," Tom groaned at the smell.
"D-doOOOon't tell... my moOoo, my MoooooOOOm!" Matt struggled to say as his tongue grew to fill the space of his snout.
Kate covered her mouth to hide her laugh. "Yeah, by the time the spell has run its course, your parents and friends and everyone won't even remember you were human so... don't worry about it," she winked, Matt adding several more turds to the pile behind him.
Her attention somewhat satisfied, Matt's hair shedding away as a deep black coat sprouting on his rough skin. "So what about you? Bull for your buddy, what for you? I certainly know what he would be," she added with a nudge.
Tom felt a cold sweat go over him as he saw any semblance of his friend Matt disappear into a bulking bull with hungry look in his dull eye.