n. pl. ninja or nin·jas or nin·jaed

One who takes loot before a group has made their decision. Typically greedy players and should not be trusted.
OMGWTF, someone just ninjaed Destiny in our UBRS raid!
by Tsurani August 11, 2005
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1.
Noun;

a highly skilled assassin. It is widely accepted that ninjas are capable of literally melting into surfaces where the shadow is sufficient.
It is generally uncontested that a ninja is fully capable of killing you in the center of a social event without being seen, heard, or witnessed in any way by your senses. Hell, he'll probably be gone before you hit the damn floor.

2.
Adjective; to describe an act of extreme skill or stealth.

2.
Verb; an act of extreme skill or stealth. Usually used as a hyperbole, because nobody knows exactly how a ninja works, as normal people have yet to see it in action.
1.
"Wanna watch Naruto with me? He's a really cool ninja."
"No, no, you got it wrong. Naturo is a pussy, not a ninja."

2.
"Gentlemen! We just seized an airfield.
...That was pretty fucking ninja."

3.
"I just totally ninja'd that fool!"
"I concur. Ninja'd that fool you did."
by Pencil Vania April 28, 2010
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Mammals who fight all the time and whose sole purpose in life is to flip out and kill people.

Natural predators with only one enemy in nature, namely Pirates.
by dragonxero February 25, 2005
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Ancient Japanese warrior, well trained in the art of stealth. Some tools of the trade include shuriken, swords, daggers, and knives. Ninja were part of a clan.
by Mad Walrus September 22, 2002
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a free runner who is so sick he could just be a descendent of a ninja,
a person who is amazing and sneaks outa no where
the guy who always wins in hide and seek
but is never found
DUUUDE did u just see that guy, i swear to god hes a frikin ninja
dude i hate john he always wins hide and seek AND HE DOESNT EVEN COME OUT WHEN WE YELL GAMES OVER
damn that guys so ninja he drinks salt
outa a sippy cup
by KIZzla February 20, 2009
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master of the art of shifty-eyes
That :ninja: sure likes to look a round
by RFC 1459 March 16, 2003
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basically doing everything a ninja (killing sneaking around taking out pirates the usual) does without being seen or heard
d00d I was having so much fun ninjaing yesterday I took out three guards with no problems
by the true ninja August 29, 2006
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