(Note: Zoe isn't Goth in this branch.)
"I wish you had your normal female genitals."
The ridiculously long penis disappeared.
"Are you okay?" asked Jon.
"I'm fine... I can feel that I'm a regular girl again."
"I thought so. I can't reverse wishes. But that was just reversing the effect of an object. It was the whole reason I wished for those pills to begin with--because an effect of an object shouldn't count as a wish, just because I wished for the object."
"Look, Jon, I'm sorry about your... weird parts. It was a prank, because I was mad. I wished for the second bottle myself, and you took it. Let me reverse it."
She touched her finger to the stone in Jon's hands and said "That four vaginas looks really freakish... I wish you have only one vagina. In fact, I wish you'd just change back to a regular guy again."
The breasts and hair disappeared, but Jon yelped. "Zoe!"
"What? I changed you back."
"You didn't! You made two wishes. The first wish was that I have one vagina. The wish to make me a normal guy couldn't contradict the first one..."