lhsrn Share definition Flag An acronym for "let's have sex right now." It is usually used, whilst texting. Boy: "I'm tired of all this flirting, lhsrn." Girl: "What the hell does that mean?" lhsrn by Smeag DP May 30, 2008 0 0 Get merch Get the lhsrn mug. Buy Now — $32.95 See more merch