For the next half-hour there was nothing but darkness and the constant slimy feeling that went with it. It was horrible.
But what was more horrible was what happened when Brad was done with him. He got thrown away. Of course he did, though. He was garbage.
He spent the rest of the night in Karyn's trash can, left to his own thoughts. Even if someone did use the stone to figure out what had happened to him, there was no way of reversing it. Jon was stuck as a condom, for the rest of his existence.