Jon was legitimately scared right now. It was bad enough people realized he was wearing these clothes, but now he even had a very lethal enemy. He ran back up to his room, and locked the door. He was very uncomfortable in his soaked panties, and was truly regretting this fantasy as it goes completely wrong.
But, he had to know why, so he got the stone, and made a wish.
"I wish I knew what my previous wish did."
New memories filled Jon's mind. When he was younger, he began obsessing over Sarah, to the point that he did not just want to be with her, he wanted to be her. At first, it was innocent; he would use the same pencil as her. However, it compounded over time, and neglect of attention or reciprocation of admiration or any reciprocation of interest from Sarah towards Jon. He developed a complex, and an identity disorder. In this reality, he thought he really was exactly like Sarah, which was why he dressed just like her. The psychologists had tried therapy, but he was so far into it, they tried a radical new technique. He was to embarrass himself out of his disorder, by emerging himself into something that resembled her life. He would dress like her, and do anything she would.
He was even given an honorary position on the all female cheer squad, much to Sarah's disgust.
He could not believe a simple wish would create a reality this complex, he needed to change it before it got any further out of hand!