Score one for the good guys.

Karyn was sitting at home when she felt her body shift around. Something felt different. She looked in the mirror. What was wrong with her face, it looked masculine? She then felt something....something between her legs! She pulled down her pants to reveal a penis. It was then Karyn realized that she was a man (except her hair and breasts, which couldn't be undone).
The phone rang, it was Sarah, calling to gloat and laugh.
Sarah was way to arrogant, though. While on the phone she help the rock in the palm of her hand, not clutching it or anything like that...this gave John the perfect window of opportunity. He simply snatched the rock back.
"I might not be able to talk about any of this, but you're not getting anything out of this either. I wish Sarah was unable to even touch this rock." John said, "Next, I wish that my ideal woman wasn't so outragiously proportioned."
John felt a tingling...thank goodness. "I wish that no one will think Karyn looks like abnormal no matter what changes she undergos."