Formerly meaning "Laughing My Ass Off" but now it's just another overused word, thanks to those emo bitches that like spamming it.
Emo Bitch 1: LMAO LMAO LMAO anxiety and depression and memes lmao!
Emo Bitch 2: I can't wait to go home and cut myself while listening to mumble rap!
An acronym of 'Laughing My Ass Off' = L.M.A.O.
-My cat just stared at me for no reason and jumped away when i smiled at her-
-Lmaoo, wtf