Clean sleight

"...you Karyn! You are the only one in this neighborhood that can use the stone without limits!" Jon said excitedly(sp.?).
"Lemme get the stone! Maybe I could reverse this wish I made yesterday! It's starting to get a littel annoying." Karyn said.
Jon handed her the stone. She held it and said,
"I wish I had red hair and B-cup breasts" Karyn said.
And with a flash everything was fixed.
"Now what do we do with the stone?" Jon asked.
"Well, we could..."