1 definition by High C

1. An injury suffered while attempting something beyond one's ability. (Often preceded by "Hey, check THIS out!")

2. An injury suffered without the knowledge of the injured party. Possibly caused by ninjas.
1. "Hey, check THIS out; I'm gonna jump this ditch!" *SPLAT* "Dude, you OK? That's a pretty heinous ninjury!"

2. "Dude, where'd you get that cut?" "Beats me, some kind of ninjury."
by High C September 24, 2012
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