Jon just sat there, stunned. He had no idea how he got there and he certainly didn't remember having sex with a prostitute. But then he remembered that wish he made ... the vague one. Maybe his wish for something interesting to happen made this situation possible.
He snapped out of his daze and looked around the motel room for the stone, hoping it was there. But it wasn't.
If it wasn't there, then it still must have been in his bedroom.
He crossed his fingers, hoping that no one found it and used it. Then he got dressed.