Acronym: "Laughing my ass fat off"
(v.) - to laugh so hard that you are ultimately burning fat from the butt.
LMAFO, that was the greatest video that i've ever seen!
Wow..that girl's got a giant badonkadonk....LMAFO
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An abbreveation for "laughing my fucking ass off".
Used on the internet.
User 1: Goddamnit. Last weekend I didn't eat for 24 hours because I was too lazy to make some food.
User 2: lmfao
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