lmofl Share definition Flag Bastardisation of rofl and lmao, Laugh My Ass On the Floor Laughing combines the two to create an even more retarded meaning. bob123: OLOLOLOL!!!11 penis!! fux0rj00ce: LMOFL!!!!!!!!!!!111"""" lmofl by The Master E October 19, 2006 0 0 Get merch Get the lmofl mug. Buy Now â $32.95 See more merch