look up any word, like tinder bombing:
 
1.
laughing my drunk ass off
I won't be able to look anyone in the eye at work tomorrow after tonight's company Christmas party! LMDAO

She was hugging the toilet all night! #LMDAO
by lexus99 December 26, 2009
 
2.
laughing my damn ass off or laughed my damn ass off.
Person 1- "Did you see the video of Lil Wayne falling?"

Person 2- "Yeah! LMDAO!!"
by forWHAT?! August 06, 2009
 
3.
laugh my dicklicious ass off
Sue: Omg, i saw some dude get hit by a train.
Me: OMG, LMDAO!!!!
by 3v1lchr1s December 28, 2008
 
4.
Laughing my dumb ass off, or a misspell for laughing my fuckin ass of, Lmfao.
Jen: LMDAO
Rob: wtf?
Jen: sry misspell
------------------------
Jen: LMDAO
Rob: u r a dumbass
by SEXMONKEY12121212 December 04, 2008
 
5.
Web-speak for "Laughing My Damn Arse Off". Derived from LMFAO, and also used in many of the same contexts as LMAO.
"My God, do you live near me? It's a small world! LMDAO!"
by Kishi Kat December 28, 2005