Ninja

A gamer in a Online Shooter that knifes u out of nowhere and moves on to his "next prey".

Your Online Friend: Hey man, there is a sniper in the second building to the right of u.
You: Thanks for the heads up!
(You move to kill in the sniper secretly, but a Ninja knifes u)
You: Damn ninja knifed me!
Ninja:......

by CTank December 17, 2008

Ninja

Someone is a ninja if their dick is licenced as a lethal weapon.

Bob: "Dude! That guy just killed 9 people with his dick!"

Jim: "Yup, hes a ninja."

by The samm April 27, 2007

Ninja

To receive the assassination medal in Halo 3 by striking an opponent in the back. Occasionally done by jumping over said opponent while they are in hot pursuit and smacking the back of their head (This is usually performed by more skillful player due to the need for precise timing and control).

Halo Player 1: Why are we in theatre mode?
Halo Player 2: I just have to show you this awesome Ninja I pulled on (Insert Pro Gamertag) last night in MLG.
Halo Player 1: Is it anything like the other 6 you have in your Fileshare already?
Halo Player 2: Better..

by AZB September 01, 2009

Ninja

This is the replacement word for white people to call someone a nigger and it be ok.

Wow, that oreo is being such a ninja right now.

by Collierflower January 20, 2009

Ninja

A derogatory term for ladies in Arab countries covered from head to toe in Black clothes with only the eyes showing.

Shit, at school most of the other girls are ninjas.

by gny April 08, 2009

Ninja

Nin-ja nin-juh
–verb, plural - Ninjas.
-verb past tense - Ninja'd

The word Ninja is rapidly becoming used as a replacement verb, which can mean virtually anything, as long as the subtext is clear.

This, of course, is not limited to actual Ninja behaviour... however, when one Ninjas, one must be ready to have others Ninja back.

We must go out and Ninja in the night.

I forgot to Ninja my pencil.

I could Ninja all day!

I could Ninja all night. (usually said with a wink and a grin)

He Ninjas better than any of them.

She and I Ninja'd pretty well at pool.

by Carolyn Steven October 24, 2006

Ninja

A Ninja is a type of person who demonstrates all awesomness

Koady is such a Ninja :)

by Koadyy September 16, 2008