LMMFAO 

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!!!

LMMFAO by Melfina March 26, 2004

lmmfao 

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."

lmmfao by #1newboyzgroupie August 6, 2011

lmmfao 

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!

lmmfao by muhlio November 19, 2007

lmmfao 

Lauging my mother fucking ass off.

LMAO you suck!

lmmfao by Anonymous January 31, 2003

LMMFAO 

Laugh my mother fucking ass off

Niggette:Guess wha
Nigga:What
Nigette:I said guess
Nigga no tell me
Nigette fineI watch my hamter
Nigga:LMMFAO

LMMFAO by Kishawnna January 30, 2007

lmmfao 

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!

lmmfao by marissanandrea February 16, 2009

lmmfao@u 

Laugh My Mother Fucking Ass Off at you - Normally used online when one laughs so hard s/he has to use acronyms... Associated with lmao and rofl...
Mel: OMFG, guess

i cant beleive you said that lmfao@u

lmmfao@u by Tim Clarey June 4, 2005