An injury incurred while trying to act like a ninja.
Tommy! Put those nunchucks down before you give yourself a ninjury!
by Andrew-B May 17, 2007
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Injury sustained whilst in the act of sneaking or attempting to sneak.
When creeping around in dark and unfamliar surroundings it is easy to cause yourself ninjury.
by thebathtubsophist January 9, 2012
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When a Ninja gets harmed, burned, cut, or hurt.
Ninja one- Hey man hows your ninjury doing?

Ninja two- Im doing fine now thanks.
by Big Naurt May 18, 2011
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An injury obtained while playing ninja.
Dude, what is that cut on your arm from?
It's a ninjury.

Did her ninjury really cause her to go to the ER?
Umm, yeah, she got her eye poked out

ninja
slap
blood
by Champion Ninja March 15, 2010
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(n.) harm or damage done by a ninja
My friend obtained a ninjury over the weekend. He did make it.
by Lamvao September 12, 2007
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"Sorry boss, I wont be in work today, I have a severe 'ninjury' ."
by Omegatron Hard'mofo'castle September 4, 2011
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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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