Top Definition
Too much fun, substance unknown AKA a drug overdose. Also someone who is found passed out in your domicile after a party due to massive intake of a substance, which you were not there to witness, especially if they are surrounded by paraphernalia.
Guy 1 - Dude, why is there a girl passed out on the coffee table?

Guy 2 - TMFSU.
by mrgoodbytes87 June 28, 2010
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