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An expletive enunceated at an a member of the oppisistion to express total and complete ownership. Most commonly used in W.o.W., World of Warcraft 3, Halo, and Dota. is the same as saying: FUCK YOU UNDERSTAND!!!
Lonnie: I just owned your ass!!
Steve: You got lucky...
Lonnie: FUKUNDERSTAND
by Lucas Everett January 22, 2007
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The vengeful act of crapping on a lover's chest while they sleep.

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