The cops checked her fingerprints four separate times! Finally they had to let Jon go. Her body may not match the ID in her wallet but her fingerprints were an identical match! Rather than let a precedent for fingerprints not being unique pass into law the Judge had no choice but to set him...her... whoever she was, free!
Jon even got his wallet back and took a taxi back to his home. He found the rock back in his hiding place and considered his next wish. He wanted to punish Mom, but he knew it wasn't HER fault he was now a huge boobed porn star! In fact, maybe his Mom might like to be younger and more desirable! He wished she would look like he did at the moment, and then when the moment passed, he wished he had his original body back as it was just prior to before wishing had changed it.
His Mom burst into the room with her new boobs in her hands.
"Thank God you havn't changed, Jon! But I don't understand why I look like this and have these!
Jon wondered if he should tell Mom about the wish stone???