ugly and preppy
ur so upnus
von robyn 20. September 2003
Top Definition
To smack down, to destroy, to annihilate. Up in your face, in your grill.

A group of online gamers that play on all gaming systems.
Player 1: Have you guys played against anyone who has UPnU in their tag?

Player 2: No.

Player 1: Man they kicked our ass last night.
#upnu #gaming #gamer #gamers #ass kickers #destroyers #web #xbox #xbox 360
von liquidfuse 22. Januar 2011
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