Short for "laugh my fucking ass off", mostly used in a joke.

LMFAO is an electronic music duo popular in the early 2010's, best remembered for their song "Party Rock Anthem". It's also an acronym for "laugh my fucking ass off", used in text to say 'that was pretty funny, my dude.'

LMFAO is an electronic music duo popular in the early 2010's, best remembered for their song "Party Rock Anthem". It's also an acronym for "laugh my fucking ass off", used in text to say 'that was pretty funny, my dude.'

LMFAO