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1. (v) To perform something dastardly and underhanded.

2. (v) To steal.


4. (v) To hide.
















by Kankokujin May 13, 2005
41 33
An unending game involving more than one participant. The objective of ninja is simple. Fart in your hand, sneak up behind the unsuspecting victim, then cover both their nose and mouth in attempt to "assassinate" them. Ninja can start at any time. There are no rules or restrictions to your assassination attempts, but they must be carried out in the fashion mentioned above. The game will end when the other party specifically expresses they want to quit the game. (If they know what the game is.) Or if they gag or excrete any type of bile. If none of these are met, then the came will continue until then.
Me and bob were hanging out in the kitchen one night, until I farted in my hand while he was busy and cuffed his mouth and nose in attempt to assassinate him like a Ninja.
by Jack wangerdoodle. February 21, 2014
1 0
Someone who has the ability to mindfuck others. Someone who is stealth enough to complete missions with other ninjas that involve high risk situations. A ninja can usually "ninja" information out of other individuals who are clear 'un-ninjas'.

Ninjas are usually dressed casually, and people don't usually peg these people as actual ninjas, but rather, ordinary and normal girls. Watch out though, there couldbe a ninja at your workplace.

And she could ninja the shit out of you.
co-worker: blah blah blah blah blah

ninja: (in her mind) - good to know I just ninja'd the shit outta you bud. I'm going to go tell my other ninja this classified information.
by ninjatwoxo July 21, 2011
1 0
A word used to describe something that is friggin' awesome.
Person 1: Did you watch that basketball game last night?

Person 2: Ya, omg, that move that that guy did was like, so ninja!!!

Persoon 1: IKR!!!!
by Mr. Hedgehog December 21, 2010
1 0
An amazing game in which people must survive ninja karate chops in order to be the last ninja standing.

The rules are:
1. Extend one arm and place it in the middle with everyone else's arm.
2. On the count of 1, 2, 3, NINJA everyone jumps back (forming a circle) and strikes a ninja pose.
3. The game begins when a ninja decides to attempt to chop the hand of another ninja.
4. An attack attempt must only be made in one motion. Once that motion is made, the ninja must freeze is his new pose. Attacks can only be made to the ninja to the right or left.
5. Only attacking a ninja's hand will get him/her eliminated.
6. The ninja being attacked may dodge; however, that ninja must stay in his/her new ninja pose until he/she attacks or is attacked.
7. It is not necessary to attack every turn.
8. The last ninja standing is the ultimate ninja.
-Hey, do you wanna play ninja?
-No, I'm just not awesome enough for that game

-What happened while you were playing ninja?
-I accidentally had my hands by my sac, and let's just say the attacking ninja got handful.

by Champion Ninja March 14, 2010
5 4
A super awesome thing, object or action. First began to be used by Naomi in Australia after playing a reflex game.
You just got the high score in tetris! Oh My Gosh! Thats Totally Ninja!!
by Gigglz September 08, 2009
3 2
v: to steal sneakily
n: an extraordinary force at something (usually athletic)
n2: an ancient Japanese spec-op
adj: to be as cool as a ninja
adv: to do something in a way that a ninja would do it
v: Yesterday I totally ninja'd this book from you, here you go.

n: Yeah, Richie's a ninja at dodgeball, he once vaulted Tommy to dodge an attack.

n2: Ninjas are cooler than pirates.

adj: OMG! This movie is freaking ninja! (Yes, I'm talking about Donnie Darko)

adv: Check this out! I can ninja laugh! *does not laugh*
by MG1992 September 01, 2009
1 0
A business acronym for "Need Information, Not Just Advice."

An admonition to provide objective and fact-based data, not subjective opinions.
"Joe keeps telling Dave how American cars are so crappy and unreliable, really slamming them. So now, every time, Dave is like, NINJA, NINJA! Have some real facts ready, or shut up!"
by Ju1iet February 29, 2008
17 16