Top Definition
a. in slang terms, to "own"
b. paradoxically, it is its own definition e.g., to umpify is to umpify.
c. Inspired by the UMP in the game Counter-Strike, the act of firing the UMP is considered "to umpify"
d. Firing an UMP in general
Umpify that shit.
by RPGenius7 July 22, 2010

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