"I wish that for the next one week, my girlfriend would be Zoe." Jon knew that the wish was a bit sick, the fact that he made his sister his girlfriend. But it would only be for a week. And with the stone, Jon could really do anything he wanted. So why not?
After making the wish, a strange chill went through Jon and his bedroom shimmered for only a moment then stopped. His room looked totally different! He ran to the window and looked out. He wasn't even in the right house!
He walked past a mirror and saw himself. He was a Goth! Oh no. I can't be a boyfriend to my own sister, so the stone made me part of some other family and made me a Goth too! Jon thought to himself.