When I was in college, a colleague at WTBS (no, not the Turner
superstation, but the 14-watt campus radio station from which Turner later
bought the call letters) _swore_ that he heard an announcer say
"This is the Canadian Broadcorping Castration..." 

Sign on a church bulletin board:
You aren't too bad to come in, You aren't good enough to stay out.

Allen was in a store that was playing Steve Miller's "Jet Liner".  
He said there was some kid next to him that had the lyrics
completely screwed up and was singing, "Big Old Rat Had A
Light On . . ."