1 definition by Paula Koala

1-up

1. To be better than, and/or to have done something better than another.
2. Mario f*ing Princess Peach.

1: I just 1-uped your ass, Bitch!
2: *Mario humping Peach* 1-up, 1-up, 1-up.....

by Paula Koala February 11, 2008