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Short for: Laughing My Mutha F*ckin Fat Asian A** Off. Most commonly used by very big Asians to get a point of responsive humor across to the other person or persons. In replacement of LOL, but only used for fat Asians.
Person: Your name backwards sounds like jack-off!

Me: LMMFFAAO
by FLiP4990 July 29, 2011
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