Bumgrain Share definition Flag A loud bellowing rumble channelled straight from the anal cavity. Equivalent to a 'fart' "Baby, I'm going to bumgrain" "Wtf is a bumgrain?" "Its yno, a migraine but like, in your bum" Bumgrain by Ilikewodds October 24, 2019 0 0 Get merch Get the Bumgrain mug. Buy Now — $32.95 See more merch
