Engrish version of LMFAO...Laughing My F*cking A*s Off.
Oh, sank you so belly much for retting me watch Purdue Football. They suck so bad, I was RMFAO!
by Robster Craws September 7, 2005
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Acronym for "Rolling My Fucking Ass Off," commonly used by ravers who have taken some "good" or real Ecstasy (MDMA).
"OMFG dude, I just dropped a white quadruple-stacked Mitsubishi and I'm RMFAO!"
by The Posp May 28, 2004
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RMFAO = RAGING MY FUCKING ASS OFF in a game
He shot me. I'm RMFAO
by Rage King 1980 April 22, 2023
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