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
Get a LMMFAO mug for your mother-in-law Sarah.
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
Get a LMMFAO mug for your Facebook friend Sarah.
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
Get a lmmfao mug for your brother Paul.
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
Get a lmmfao mug for your buddy Yasemin.
joe:dude did u see that chicks face
stan:lmmfao yes it was ugly
by frigenfrigon May 20, 2010
Get a lmmfao mug for your cousin Helena.
when something deserves a term that is funnier then it should be. Stronger than "lmfao" or "lol". so when you actually start laughing on your computer desktop you now know what to write. used for IMing or texting only.
sports4eva: i might tape record ms.rodriguez so she remember things more often and i dont have to get stuck doing doing my work double!

wateva13: lmmfao! do it!
by marissanandrea February 16, 2009
Get a lmmfao mug for your Aunt Helena.