Top definition
Laugh My Mother Fucking Ass Off - Normally used online when one laughs so hard s/he has to use acronyms... Associated with lmao and rofl...
Mel: OMFG, guess what!!!
Joe: What?!!?!??!
Mel: My cat fell into the toilet. :(
Joe: LMMFAO!!!
by Melfina March 26, 2004
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2
Laugh my mother fucking ass off.

You would use this when talking to someone online or when writing a letter and your too lazy to writ it all out.
Val fell on her ass today, lmmfao.
by nevada December 02, 2003
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3
laughing my mother fucking ass off
(when u feel that lmfao isnt enough)
guy1: Q:why did the toilet paper roll down the hill?
A: because it wanted to get to the bottom

guy2: LMMFAO!
by muhlio October 31, 2007
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4
Laugh My Mother Fucking Ass Off. Similar to "lmao," or "lmfao," but instead of "Laugh My Ass Off," or "Laugh My Fucking Ass Off," it adds the impact with "Mother".
Mike: "So the dog walked itself home, ate a pizza, and took a nap."

Joe: "LMAO!"

Peter: "LMFAO!"

Scott: "No dudes, LMMFAO."
by #1newboyzgroupie August 06, 2011
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5
joe:dude did u see that chicks face
stan:lmmfao yes it was ugly
by frigenfrigon May 20, 2010
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6
by Anonymous January 31, 2003
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7
Niggette:Guess wha
Nigga:What
Nigette:I said guess
Nigga no tell me
Nigette fineI watch my hamter
Nigga:LMMFAO
by Kishawnna January 26, 2007
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