Top Definition
The act of being under the influence, and trying, yet failing to hide it. Symptoms include laughing, falling, falling while laughing, rolling, or anything else uncharacteristic of the one "fuckin up".
Sam: Guys, guys.... we should..... guys.... dang...
Urrybody: Sam, you fuckin up!
by BustaNinja August 08, 2011
1 Word related to Fuckin up

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