Top Definition
An extremely contagious disorder/disease that causes you to go into crazy, hour long fits of laughter. Usually caused after watching Jersey Shore episodes. Some also feel the urge to fist pump at random times.
A: DUDE I JUST WATCHED ALL THE EPISODES OF JERSEY SHORE AND NOW I THINK I HAVE FIST PUMP DISORDER HAHAHAHAHAHHAHAHAHAHAHHAHAHAHAHAHAHAHA...

J: What the fuck. HAHAHAHAHAHAHAHAHAHAHAHAHAHA
*FIST PUMP*
by sexybuttwrenchBITCH July 27, 2010
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