"I wish that, for one hour, you'll really want to be a boy. I also wish that whatever you wish for yourself, I can change back."
"I can't believe you just said that."
"Well, how do you feel?"
"I want to be a boy, Jon! I can just imagine myself with a penis, without breasts, wearing boy's clothes and kissing girls ..."
Jon tossed the stone back to Karyn. "Here's the stone. You know, you can wish to be a boy if you want."
Karyn caught it and looked at it. Jon could see in her eyes that she was about to wish it. And a few seconds later, she did. "I wish I was a boy."
The stone glowed.