1 definition by Lxst

it means laughing my ass if but LMAOO itself can also be used by restarts who think almost every other message u send them is funny and they respond back with another LMAOO after every other message u send them.
(Christopher) : yo Jayden u saw that video where that moose was running and fell of the parking lot and died?

(Jayden): LMAOO

(Christopher) : ikr don’t forget my drunk so when u gonna come to the game?

(Jayden) : LMAOO

(Christopher) : ...

(Jayden) : LMAOO
by Lxst January 8, 2020
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