Definitions by HumanDictionary*original*

LMFAOOL 

LMFAOOL- laughing my fucking ass off out loud.

Usually used for the sheer enjoyment of saying an acronym that long.

You:asl?
Them:1,yes,here
You:...
Them:LMFAOOL

LMFAOOL by HumanDictionary*original* January 8, 2010