look up any word, like cunt:
 
1.
lmffo. short for laughin my fuckin face off.
A: Random funny shit
B: lmffo
by kaffibolli8 September 23, 2009
6 2
 
2.
LAUGHING MY FUCK FLAPS OFF
i laughed so hard i was lmffo
by mrs toosh November 18, 2011
2 0
 
3.
Laugh My Freaking Face Off. Laughing extremely hard at something.
Dude i just LMFFO'd
by Lonedraagon January 27, 2011
13 37