1 definition by Yodaguy

Someone who always trys to "one-up" you by being better at EVERYTHING. Created by TK & MW (God)
Eg1
Guy: I just shot down the enemy chopper!

One-up: Yeah, I did that with my tomahawk like five times.

Eg2
Guy: I just got my first nuke!

One-up: Yeah, after my first nuke, I got one every round after that for three days straight
by Yodaguy January 15, 2011
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