Possibly one of the funnier things I've read in awhile. Short, and too the point.
http://www.thekcrachannel.com/entertainment/3820834/detail.html
George Clooney Pulls Embarrassing Prank On Brad Pitt
POSTED: 7:51 am EDT October 14, 2004
NEW YORK -- Brad Pitt might think twice about punking George Clooney again.
Pitt had the nerve to pull a prank on Clooney while they were filming 'Ocean's Twelve' -- even though Clooney's the king of the pranksters. Matt Damon told Cosmo that Clooney got Pitt back by slapping a bumper sticker on his car that read 'Small Penis Onboard.'
Damon said Pitt drove through rush hour in Los Angeles without knowing why people were looking at him and waving.
-Pat Melvin