look up any word, like dirty sanchez:
 
23.
L=Laughing
M=My
A=Ass
O=Off

Could also mean Lick My Ass Out.
Person 1: Good one! LMAO
Person 2: You want me to lick your ass out?
by sbwild88 May 29, 2012
 
1.
Laughing My Ass Off. Used online only.
Matt: Bill fell off the horse and injured his pelvis in 6 different places.

Joe: LMAO!
by lem December 15, 2002
 
2.
Laughing My Ass Off
Beth said "lmao" when Jason revealed his miniature testicles.
by Rob March 13, 2003
 
3.
laughing my ass off
by dawn June 15, 2002
 
4.
An acronym standing for Laughing My Anus Off. It literally means laughing until your anus becomes detached from your body. It is a serious medical condition and must be treated AS SOON AS POSSIBLE.
Billy thought lmao was just an expression used when something was funny. He was dead wrong. He told his friend Jerry a knock-knock joke over IM, to which Jerry responded "lmao." The next day, Jerry was found dead at his keyboard. His anus was nowhere to be found.
by Dr. Montacockaplis March 17, 2008
 
5.
Lmao:

Laughing
My
Ass
Off

"Laughing My Ass Off". Used online to show you find something really funny or are laughing at it alot. Starting to be used in real life when they find something "El-EM-AE-OH!".
JESS: I left the house today with a pair of old pants stuck to my shoe :(
Angela: LMAO! No way..
by Smile like you mean it June 18, 2007
 
6.
Lmao- a term in which to show great laughter. For example "lol" ,but with more feeling and more laughing.
L= Laugh
m= my
a= ass
o= off
Teddy- " Hey guys do you know what an Alaskan fire dragon is?"
Group- "Nooo..."
Teddy-" Ok, its when the girl is giving the guy a ...(explains in EXTREME detailwhich is like the teddyi know)
Holden, Mike, Dallas, Ray, Kyle( the group)-" LMAO!!!! HAHAHA OMG HA"
Kylen- "Eww"
by Kylende October 29, 2007
 
7.
It means laughing my ass off.
That was so funny!!! I'm l.m.a.o.
by Tina June 14, 2006