lmcao Share definition Flag Laugh My Cracker Ass Off. "Yo bee, I be pullin' my gold, iight?" "WTF!?! Why you spell like a douchehat? lmcao." lmcao by Shawn Owen June 5, 2005 0 0 Get merch Get the lmcao mug. Buy Now — $32.95 See more merch