Top Definition
A "Bum Root" is when a penis penatrates anothers anal cavity. However, the term Bum Root can also be used to diss one of your homies if he/she is being an annoying asshole.
Hey, Mick W your a real Bum Root you are! Get Fucked!
by Adam101 July 13, 2006
6 Words related to Bum Root

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