Jon goes to the local novelty shop and finds a pair of x-ray 
 glasses. He checks them out, and isn't fully convinced, but as 
 usual, the store assistant comes along and closes the deal.
 
 On his way home, Jon puts on his new x-ray glasses and, 
 bingo! He sees everyone in the street naked. He takes them off 
 for a moment, and everyone has their clothes on. Puts the 
 glasses back on...everyone is naked! "Cool!"
 
 As he arrives back home, he is eager to show his new toy to 
 his wife, Judi, but can't find her. He goes up to the bedroom 
 and finds his wife and the postman, naked in bed. He takes his 
 glasses off, and the two are still naked. He puts them 
 back on, and they are still naked. 
 
 Jon then says: "Damn, I just paid fifty bucks for these and 
 they're already broken!"