1 definition by kittybaby7

Top Definition
FUI
fucking under the influence. having sex while also experiencing the effects of drugs, alcohol, etc. FUI is the 8th deadly sin and is punishable by a 6 month suspension of your fucking license.
Dude I don't remember her at all...I must have been FUI, I don't even remember her name.
by kittybaby7 June 17, 2007

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