At the exact moment the stone gave him CTS, Biff was at home having sex with his girlfriend Sarah McMillan. Well, actually, they were about to have sex. Biff was always in a hurry, but Sarah always seemed to take her time. So, it took her a little longer to get all her clothes off.
"Come on, Sarah," Biff said, sounding a little whiny.
"Oh, don't be a complainer. You should feel honored to have sex with me," Sarah said.
"Believe me, I do," Biff said with a grin, touching Sarah's bare shoulders.
Suddenly, Sarah pulled away from him.
"What is it?" Biff asked.
"I don't know. It felt like something stung me." Sarah began putting her clothes back on, starting with her bra and panties.
"What are you doing?" Biff asked.
"Well, I'm not going to let you fuck me if there's a bee in here," Sarah said. "God, that hurts," she said, rubbing her arm and her shoulder.
"You want me to rub it for you?" Biff asked, hoping it might get Sarah back in the mood for sex.
She smiled, then nodded.
Biff placed his hands on her shoulders, meaning to give her a massage, but as soon as he touched her skin, he noticed something odd about it. It felt coarser, not as soft. He looked down at her and saw why. Her skin looked more like his skin. And, as he watched, the muscles in her arms and shoulders began to become more pronounced, as if she had been weightlifting for a while.
"Hey, why'd you stop?" Sarah asked, looking back at her boyfriend. She saw the shocked look on his face and suddenly became concerned. Then she looked down at herself and got even more concerned. Her hands and arms looked like they belonged to a guy. And as she watched, her breasts deflated and became a pair of pecs (causing her bra to hang limply on her chest) and the rest of her torso became manly and muscular, making her look like a lot of the jocks she knew at school, including her own boyfriend. Then her legs became male legs, her feet became male feet, and then something odd was happening underneath her panties. She pulled them down and watched in complete horror as a penis pushed its way out of her vagina, followed by a pair of balls.
She looked up at Biff with wide eyes. "What's happening to me?" she asked, but it wasn't her voice. It was too deep. It was a boy's voice.
Biff got up off the bed and stared at the jock boy who had Sarah's face and was wearing Sarah's lingerie.
What was happening?
