Bum Root Share definition Flag 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! Bum Root by Adam101 September 5, 2008 0 0 Get merch Get the Bum Root mug. Buy Now — $32.95 See more merch
