man bum thumper Share definition Flag a derogatory term used to politly call someone ghey or g4y or gay, homo or f4g fag. "this guy has to be a man bum thumper." "you cheated you man bum thumper!" man bum thumper by Matches007 September 22, 2005 0 0 Get merch Get the man bum thumper mug. Buy Now — $32.95 See more merch
