Top definition
The noise made by the ball sack slapping against one's taint while making a thrusting or side to side hip motion. This can only be done while wearing loose fitting underwear or no clothes at all.
While Jim was dancing to Crank Dat in his boxers and knee socks, the noise made by his sacamaphone was deafening.
by Waffle Fries July 24, 2008
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