bumsauce major Share definition Flag Means major bummer. Something you say when an unfortunate or untimely event occurs. "Dude, I can't go to the bro sesh today." "Oh, bumsauce major, man." bumsauce major by ldawg2damax September 15, 2011 0 0 Get merch Get the bumsauce major mug. Buy Now — $32.95 See more merch
