Abbreviation for the term Laughing My God Damn Mother Fucking Ass Off. Often used online when one can't be bothered to actually say it all.
person1: I fell off my bike today and twisted my ankle
person2: L.M.G.D.M.F.A.O.
by Deans_babi_gurl August 23, 2005
Laughing My god-damned motherfucking ass off. An internet abbrev. used only by complete n00bs.
Normal Person: lmao
faggy newb: lmgdmfao
by Aa'lok Etec January 12, 2004

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