The stone glowed as the wish was granted.
Jon looked around, but didn't see anything different. But then he thought that Biff and Sarah didn't really have much of an impact on him, except for at school. And that's where he'd have to go to see any changes.
He went about his night the way he usually did, then went to sleep. Before he finally dozed off, thoughts of what the "new" Sarah and Biff could be like drifted through his mind. It was going to be interesting.
