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the acronym for "Laughing My Little Fucking Butt Off"
usually used by Claudia the fatass.
example 1:
ralph: i hau du yu zai yt, zmell laik vuet gout
claudia: lmlfbo

example 2:
alphonse: eyy yo fatass, u lug lyk a beached whale
claudia: lmlfbo
by T-Bown November 17, 2007