Jan's Mistake

"I wish that for next ... uh ... month, Karyn would be a guy named ... uh ... Karl," Jan said. The stone glowed and suddenly Karyn began to change. Her female frame changed into a masculine one (with a more muscular look), as her skin became rougher and covered with hair. Then she felt something pushing out out her vagina and pulled her pants down to see what was happening. But even before she saw it, she knew what she'd see. It was a penis. But not everything changed. "Jan!" Karl yelled, with *his* new male voice. Jan stared at her friend. Karyn had now become Karl, a teenage boy. But there was a problem. Karl still had Karyn's blond hair and large breasts. Jan had forgotten that previous wishes couldn't be reversed.