Top definition
A friend, relative, or associate, that always has a better story than yours. This person will lie about almost every detail of his story just to be a little bit better than you. Traits are lonely adolescences with absolutely no friends, and a lot of cats.
Me: Dude, I hit a birdie on that last par 5"
One Uper: Well, I just happen to get an eagle on that hole.

Me: I won the lottery this weekend.
One Uper: I've won it twice.
Me: How is that possible, duche?
by I_TOUCH_MYSELF August 29, 2009
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