A few days before his proctological exam, a one eyed man accidentally swallowed his glass eye. He was worried for a while, but there were no ill effects, so he forgot about it.

Once he was in the doctors office, the man followed instructions, undressed, and bent over. The first thing the proctologist saw when he looked up the mans arse was that eye staring right back at him. You know, said the doctor, you really have to learn to trust me.