The Person They Hate

"I wish that at noon this Saturday whoever is holding this stone will transform into the person they hate the most and will stay that way for a week," Jon said. The stone glowed, granting his wish. "There. Now to make it fair. I wish I would forget about ever making the previously stated wish and I would forget the idea of making it until noon Saturday when I will remember again." The stone glowed and all memories concerning his transformation wish magically disappeared from his mind.