Pacing back and forth in her bedroom, Jen finally breaks down and decides to call one of her friends for help. The phone rings and rings until at last Claire picks up.
"Jen, where are you? You're gonna be late for school if you don't..."
"I need you to come over NOW! It's an emergency!" Jen blurted out.
"What? What's wrong?"
"It's not something I can really explain. You have to see it to believe it." Jen looked at the bulge in her pants, and felt her cock stir. She gulped back a sob, and asked Claire once more to come over to her house.
"Oh alright. But this better be important Jen." Claire hung up the phone. Jen breathed a sigh of relief, and sat on the edge of her bed. Jen no sooner sat down than she bolted right back up again. Her balls had been resting on her thighs, but that wasn't the reason Jen was panicked. It was what was underneath her that startled her.
Jen's hands groped behind her until they came into contact with a short nub pressing against the elastic of her underwear. Jen stuck two fingers into her underwear, and found a two inch, furry growth above her ass. Jen yanked her hand back as she realized it was the beginning of a tail.
"This is only going to get worse unless.... unless I..." Jen couldn't bring herself to finish the thought. She didn't want to fuck a girl, let alone one of her friends, but the alternative was to turn into a jackass forever. Or until she actually did find a female willing to have sex with a donkey stud.
By the time Claire rang the door bell, Jen's tail was five inches long. The end had long hairs that tickled her butt. Jen's asshole was also different. Too large for a teenage girl, more like that of an actual donkey's. Jen had, filled with shame, pulled her pants down in her bathroom to inspect it. She saw it was completely black, much like her cock.
"Jen, geez, why do you smell like you fell into a pile of manure?" Claire waved her hand in front of her face as she entered Jen's house. Jen shut the door, and self-consciously crossed her legs.
"Uh, that's part of the problem. This morning that nerd Kyle called me and..."
"And what?"
"He gave me the, you know... the Transform or..." Jen knew what would happen if she uttered the words. And she wasn't about to force her fate on Claire.
"The curse? That's not real. It's just some stupid Jen what are you doing!?!?" Claire shrieked as Jen began to pull her pants down. She knew the only way to get Claire to believe her was to show her. Her face burning red, Jen tugged her sweatpants down, revealing a large bulge in her boyfriend's boxers. Claire's mouth hung open in shock.
"He did this to me. He gave me...this thing." Jen's voice was barely over a whisper. She pulled the boxers down the rest of the way. Her cock and balls flopped out of the thin fabric that once held them. Claire couldn't think of anything to say. She just stood there and stared.
Claire knew it was wrong, she knew she shouldn't think like this, but there was something intriguing about Jen's... growths. That large cock, those heavy balls, they belonged to an animal. But there was something about them that was making Claire hot.
"What am I going to do?" Jen asked, snapping Claire back into reality.
"Uh, I don't know. Was that... er is that the only thing Kyle did to you?" Claire averted her eyes from Jen's naked crotch. Her cheeks were flushed too now. Embarrassed that she'd been the least bit turned on by her friend's nightmarish transformation.
"No." Jen turned around and showed Claire her tail. Then proceeded to repeat what Kyle told her. That unless Jen had sex with another girl, she'd slowly turn into a jackass. Neither Jen or Claire had noticed that Jen's ears were a tad longer, and ended in furred points. Or that there was a trail of dark hairs running down Jen's neck and spine.
"I'm sorry Jen. But I think the only way to stop this is to do what Kyle said. We can't do anything else until we get you back to normal..." Claire stopped when Jen started to cry.
Claire went up to her friend and put a supportive arm around Jen's shoulders. Claire and Jen knelt on the floor together, one comforting the other. It didn't take long for the two to start feeling something else bubbling up from deep inside their chests. Jen began thinking with that cock of her.
Claire was so close to her. Jen could look down Claire's shirt, at those large breasts. Without any pants on, Claire easily saw Jen was becoming aroused. The cock that had once been resting inside a sheath slowly extended. Claire couldn't believe how big it was. Bigger than she'd imagined it would be. It was as thick as her entire arm, and at least 2.5 feet long. Once it was fully erect, the bulbous head began to drip with pre.
Jen looked up, her large brown eyes meeting Claire's. Claire felt herself getting wet. It was as if being closer to Jen made her hornier. And that cock of Jen's was looking better and better with each passing second.