He becomes a organ of one of his teachers

Jon then thought man it would be fun to be a organ inside of someone. He then says I wish that I was a organ inside on of my female or male teachers and that they will always easy say yes to it and I would be a organ inside them for 24 hours then I would be teleported back to my house and turned back to normal. The stone then glowed in his hand and he then blacked out. When he woke up he couldn’t see anything. Where am I Jon thought he then remembered his wish. Who’s body was he inside and what organ was he?