Top Definition
LMFAO is the meaning of Laughing My F*cking Ass Off which adding the IRL meaning In Real Life. So altogether it would be Laughing My F*cking Ass Off In Real Life.
Haha that was so funny I'm LMFAOIRL.
#lmfao #lol #rofl #pmsl #haha
by xaoifex May 07, 2010
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