Top Definition
laugh my fucking ass off loudly and uncontrollably
can also use:
ugly guy: hey hottie
pretty girl: hey
ugly guy: you are so hot, and beautiful, and cute, and blablabla
pretty girl: thanks
ugly guy: so cutie what do you think about me?
pretty girl: LMFAOLU xD!!!!
ugly guy: what?
pretty girl: bitch please...
by who who June 11, 2008
5 Words related to LMFAOLU

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