ninja 

this is a super secret form of the word nigger.

That ninja dropped the ball.

ninja by erb1er September 24, 2007

ninja 

a nigger or a black person. this term is used when u dont want a black person beating u up for saying niger

ME: look at that nigga walking by
Sally: That aint a nigga thats a ninja

ninja by hanna Claire April 7, 2007

ninja 

To do something slyly or discreetly; to act in a secret manner.

Dood 1: "Dood, did you see Bob jack that old lady's purse?"
Dood 2: "Yeah, dood, Bob is sooo ninja."

"Dude. Next time, try to be ninja when you steal a cookie from the cookie jar. Jeez.."

ninja by MJ is cool. August 7, 2009

Ninja 

When you disappear behind a thick puff of smoke. Works better with a hookah; inhale the smoke and then slowly breathe out. Make sure to be standing near a place where you would hide yourself.

Ambrose - Okay guys, check it out! (creates a huge smokescreen and disappears behind the curtain)
Buds - WTF? This dude must be a fucking ninja!

Ninja by Ambrose Zeppo December 4, 2009

Ninja 

1.(adj) Used to describe something that is so awesome it blows your mind. Comes from the fact that ninjas are well..ninja.
2.Can also be used as a characteristic to describe a person or thing.

1. "Did you see those gangstas on scooters rockin there kickass skillz before??" "Yeah, it was so ninja!"
2. "That girl is so ninja for starting the use of the word ninja in many people's daily life.
3. Daybies think that's so endo when really it's not even ninja.

Ninja by Sniperx992 January 27, 2010

Ninja 

A silent killer that orriginated from japan. They are common to were black cloths and carry an assourtment of wepons.

I did not see him! He was like a ninja!

He killed him so fast he was like a ninja!

Ninja by Conman27 May 5, 2010

ninja 

Something nearly every single azn that exists claims to be.

Derek: ZOMG IEM LIEK SOOOOO NINJA ASSASIN LOLOLOLOLOLOL XD XD XD XD

John: No. No, your not. Your a basement dwelling otaku with no friends. GTFO.

ninja by Pencilz June 3, 2010