I'll tell ya what's funny....a buddy of mine has a tape of him prank calling Alan Colmes' radio show live back about 1991 or so on about 10-12 different occaisions. I can never look at Al's mug on Fox and not think of some of those calls.
I remember that one of the big news shows got a live phone call from a supposed witness to Colin Ferguson going postal on the Long Island commuter train.
He claimed that Ferguson was saying "Baba-booey" over and over.
Took the newsies almost 10 minutes to realize that the guy was putting them on.