1 definition by play dO

A bump fist is where you fist bump upside down
bump fists are normally preformed by an idiot, generally called Aaron, who thinks that doing a bump fist is the normal way to fist bump.
Person 1: wow look at that idiot aaron doing a bump fist
Person 2: they are such an idiot bump fisting like that
by play dO August 8, 2019
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