Ninja 

(N.) A synonym for black people, due to the fact that:
1. They usually travel at night
2. They have the uncanny ability to steal things
3. They are black
4. They are impossible to see at night

1. Yo, dat ninja jus stoled my chicken box.

2. Son, that ninja's got the biggest meat.

Ninja by Tom Do October 6, 2007

Ninja 

used like juggalo.

that dude iz a down ass ninja

Ninja by joe price July 18, 2008

ninja 

A person skilled in the art of covert operations, usually assassinations.

Martin Ryder was the first ninja to ever live

ninja by martinryder April 29, 2008

Ninja 

n. A general reference to a person, with no racial, creed or gender problems. Usually has added value of respect and admiration (see def. 1).

Sup ma Ninja

Yo Ninja, how u doin?

Ninja, were u serious about this hook up?

Ninja by abragag December 16, 2008

Ninja 

originated by Mario and the Ninja Clan from Camden NJ.
Is a substitute word for pretty much anything. From nouns to verbs and even adjectives. Mostly used to cover up a sentence when in public.

Mario: What the ninja is he doing?
Bebop: I don't know!
Mario: Damn!, You got to be ninjain with me!

Ninja by Metalkun February 25, 2010

Ninja 

The word that is used to replaced the word Ni**a. Any and everyone is free to use it. Replace the N word with Ninja in songs, jokes and everyday convos and it makes things flow better.

I was walking home last night and i got mugged by 4 Ninjas.

or

White guy singing Jay-Z: "If you feeling like a pimp ninja go an brush your shoulders off"

Ninja by hanoian April 28, 2010

Ninja 

Slang for nigga. Since white people can't use the word, ninja works perfectly since its only two letters off and will not get you beat up. Plural form ninjas

Man this crowded inner-city DMV is full of ninjas. I better watch my ass.

Ninja by Daryl The Sterile December 6, 2010