Ninja were people of feudal japan trained in Ninpo or Ninjutsu. It was possible to use skills learned in assasination-which was done, but not coldly. Ninja's were japans peace keepers and information gathers-they would assasinate political powers that threatned peace of japan, and would often be recruited by a higher power (such as a warlord like Oda Nobunaga, or Ieyasu Tokugawa) to spy on enemy's and gather information. Ninja were originally called *Shinobi*, literally translating into a expert at information gathering. Ninja groups were divided into families and clans. The two regions were Ninjutsu developed and Ninja were founded were Iga and Koga provinces. there were roughly 53 subgroups of Koga and Iga. One of the most famous Ninja in history was Hattori Hanzo-a famous warlord and Ninja of Iga.
Random facts:
In 1676, the book Bansenshukai about Ninja methods was written by Fujibayashi Yasutake, a Samurai of Iga castle.
In 1681 the book Shoninki (correct Ninjutsu memories) was written by Fujibayashi Masatake.
In 1653 the book Ninpiden meaning secret teachings of Ninjutsu was written by Hattori Hanzo Yasunaga.
There were very few ninja-when oda nobunaga attacked Iga, 80 ninja fled.
Genbukan and Bujinkan are the only organizations keeping true Ninjutsu alive today.
Ninja didnt wear black very often-they wore deep red or dark green when on missions, and in winter snow, White.
Ninja were often Samurai too-afterall its only Title, not material.
Ninja didnt actually use straight swords much-only when they were desperate. After ninja had established themselves, they could use curved blades.
Other names used for ninja were Kancho, Shinobi, Kusa, Sppa, Rappa, Tsuppa, Mitsumoto(Kembun, Metsuke, Kaiken). Kyodan, Kanja, Choja, Shinobi no Mono, Onmitsu.
Ninja arent magical, they just understood sciences more advanced then the rest of the population of the time.
Ninja couldnt fly.
Ninja couldnt perform supernatural stunts.
Ninja can evade swords.
The Ninja stealthly entered his home.
by Ninpo-Bugei July 28, 2006
Ninja is a game in which two or more people must play. The game is played by slapping each other on the hand. You can only make one move per turn. Once an attempt at slapping the other person's hand is made, you must keep your body in that position until your next turn.
Person 1: Dude, my hand hurts from that Legit game of Ninja!

Person 2: Hella yeah it does, I pwned you in Ninja!
by Lavieta February 27, 2010
Very fast motorcycle produced by Kawasaki.
I have a Ninja 1100, it goes so fast it can rip off your eye lids.
by Joshua H May 26, 2006
Due to the fact we could not find any ninjas, we can not define them. We hope our apology is accepted. (But not by ninjas, for they never forgive, and they NEVER forget.)
That ninja is a great ninja, for we do not know what, who, or where it is.
by IfITellTheNinjasWillKillMe November 29, 2009
Facts:

1. Ninjas are mammals.
2. Ninjas fight ALL the time.
3. The purpose of the ninja is to flip out and kill people.

Weapons and Gear:

Ninja sword
Throwing stars
Ninja outfit

Testimonial:

Ninjas can kill anyone they want! Ninjas cut off heads ALL the time and don't even think twice about it. These guys are so crazy and awesome that they flip out ALL the time. I heard that there was this ninja who was eating at a diner. And when some dude dropped a spoon the ninja killed the whole town. My friend Mark said that he saw a ninja totally uppercut some kid just because the kid opened a window.

And that's what I call REAL Ultimate Power!!!!!!!!!!!!!!!!!!

If you don't believe that ninjas have REAL Ultimate Power you better get a life right now or they will chop your head off!!! It's an easy choice, if you ask me.

Ninjas are sooooooooooo sweet that I want to crap my pants. I can't believe it sometimes, but I feel it inside my heart. These guys are totally awesome and that's a fact. Ninjas are fast, smooth, cool, strong, powerful, and sweet. I can't wait to start yoga next year. I love ninjas with all of my body (including my pee pee).

Q and A:

Q: Why is everyone so obsessed about ninjas?

A: Ninjas are the ultimate paradox. On the one hand they don't give a crap, but on the other hand, ninjas are very careful and precise.

Q: I heard that ninjas are always cruel or mean. What's their problem?

A: Whoever told you that is a total liar. Just like other mammals, ninjas can be mean OR totally awesome.

Q: What do ninjas do when they're not cutting off heads or flipping out?

A: Most of their free time is spent flying, but sometime they stab. (Ask Mark if you don't believe me.)
One kid dropped a spoon and a ninja totally killed the whole town.
by Brian Damage August 27, 2005
A universal replacement for any verb.
"Hey lets ninja us up a pizza"

"Your mom was all like, wanna ninja?"
by darrenism August 25, 2006
Facts (100% True):

-It only takes 1 ninja to screw 1,000,000,000,000 lightbulbs. and a similar amount of girls
-you can't see a ninja until it's too late
-ninjas can tell if a movie is good by looking at the cover
-The n word was a mispronunciation of ninja
-ninjas can beat mimes in the silence game
-a ninja always wins, otherwise they are not ninja
-ninjas don't touch the ground because it is afraid of ninjas
-infinity is just another term ninjas use to count their kills
-ninjas don't wear clothes, that is just their natural camoflauge
-ninja is the explanation for everything
-ninjas can swim on land
"Did you see that ninja-....?" (abrupt pause and silence).
by ~MR.D~ January 11, 2011
No Income, No Job or Assets. A brave urban warrior who roams the city streets and job queues in search of the next quest. Perhaps some nice shoes, with laces or a delicious hot dog with extra relish and cheese.

Can be found:
- with a tie around his forehead, warrior style, at his last corporate drinks before being let go. All thanks to that cute girl in accounts, a crab, the photocopier and the C.C.T.V.
- At a lucrative poker game, enacting an opera whilst generously donating their car to a small village, community college or pimp.
- Collecting spare change to seek revenge for a blood oath.
Man I almost feel sorry for Jack. The man has become a bloody N.I.N.J.A. since the whole bleach 'accident'.
by Matt_Decker May 07, 2008
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