L.S.H.T.T.P.W.N.S.C.O. Share definition Flag Laughing So Hard To The Point Where No Sound Comes Out. jack: dude my mom just fell down both flights of stairs jill: L.S.H.T.T.P.W.N.S.C.O.!!! L.S.H.T.T.P.W.N.S.C.O. by kayham March 6, 2011 0 0 Get merch Get the L.S.H.T.T.P.W.N.S.C.O. mug. Buy Now — $32.95 See more merch