Another on Udurawana

Udurawana goes to the local novelty shop and finds a pair of x-
ray glasses. He checks them out, but isn't fully convinced. The
store assistant assures him they work and closes the deal.

On his way home, Udurawana 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 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're still
naked.

"Damn," says Udurawana, "I just paid fifty bucks for these and they're already broken!"