<Tiff stumbled back in surprise and bumped into the medicine cabinet, causing one of the jars to shatter and spill its contents all over her.>
Covered by the dense fluid that was the content of the jar, Tiffany tried to dry her face, arms and legs, but it was too late. Suddenly she felt a tingling, and collapsed on a chair. Katie was before her and, more terrified, reading the label of the jar:
"Oh no, this is concentrated Testosterone!!" Tiff, you must immediately take a shower. Hurry!" Yelled, but Tiff did'nt listen.
She was astonished by her quick change. First, her legs. While she shaved few days before, stiff hairs are growing there, and mass muscular formed under the hair. Her legs are becoming in fact more manly! And the same change occurred to her arms, who elongated and thickened, becoming more muscular and hairy of course.
Last her face, where a thick layer of dark hair poked on her chin, upper lips and cheeks, developing just under the jaw. She sported shortly a full manly beard and a bushy moustache!
"Wha..." She stopped short, hearing her voice, more deep and rough now. A guy's voice.
She felt her new Adam's apple with a masculine hand, then she moved her hand on her crotch..