Top definition
Acronym for "laughing my motherfucking ass right the fuck off." Used by those infatuated with profanity yet too lazy to type complete words, or children amused by the word "fart."
Bill: I just beat my wife with a battering ram!
Bob: LMMFARTFO!
Bill: What?
by Ð4\/3 March 25, 2011
Mug icon

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the shirt