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1.
1.driving from coast to coast of the United States as fast as possible, often to break a record
Alex Roy recently broke the Cannonball Run in 31 hours, using a GPS system and police detector to avoid the police.
by karrot November 18, 2007
 
2.
the act in wich a man lifts the legs of a pregnant woman till she looks like a cannon ball and proceeds to fuck her till he's satisfied or untill he pokes the babys face
Me and my wife did a cannon ball run when she was pregnant and now my baby has dimples
by ass man 5000 May 11, 2007