Top Definition
First seen in's Humpday Challenge DOA4 edition. Meaning to be owned, or in the case of a noob, pwned, severely. Most typically by a ninja, or in a stealthy fashion possibly by an assassination, Halo style.
"Joe got Ninjowned." from's article on the DOA 4 Humpday Challenge.
by cauc8Xsens8X January 13, 2006

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