I-Ninja 

Great game released over any platforms.
Features a ninja that violently kills anything that gets in his way, including his sensei. The "I" stands for iron. Therefor the main charactor , Ninja, is an "Iron Ninja". The whole game reaks of bad karate movies!

Aw, look at the cute lil' ninja...!
Wait, did he just cut that guy in half!?

I-Ninja by ...? January 3, 2004

I'm running Ninja 

In reference to Call of Duty games, it is a fancy way of saying "Nobody will hear me" when you are sneaking into or out of a house or other building you weren't supposed to leave/enter to begin with.

Buddy: Dude, are you seriously going to come with me later? Won't your parents hear you?

You: Relax, I'm running Ninja up in this biatch.

I'm running Ninja by AL_PS3 March 2, 2011

I'm running Ninja 

In reference to the Ninja/Ninja Pro perk of the CoD games. It's basically a fancy way of saying that you don't have trouble being quiet/sneaky.

Most often used when your friend is worried about you making noise when sneaking out of or into your house.

Teen 1: C'mon man, let's go!

Teen 2: Did your dad hear you?

Teen 1: Relax buddy, I'm running Ninja right now.

I'm running Ninja by AL_PS3 February 27, 2011

here i am with my ninja clan 

Here I am with my ninja clan,

ninja clan,
here we stand.

Or in Sasuke Uchiha's case,

Here I am with my Uchiha clan,
Uchiha clan,
No one stands.

Twelve years ago,

a Nine-Tail Fox suddenly appeared...

If you believe it!

Naruto!

Naruto!

Believe it!

Beeeeliiiiiiieve it!

Here I am with my Ninja Clan!

Ninja Clan

Here we stand!

Naruto

I'm on my way,

Naruto

I feel okay!

Getting ready to fight on set!

Come on best friends by my side!

Sasuke, is really cool!

Sakura, the beautiful!

Kohagag en Naruto sagohgo mamoe

Kohagag en Naruto sagohgo mamoe

here i am with my ninja clan by Hinata Hyuuga, Bitch February 7, 2014

iNinja 

An iNinja is a master of iDevices (iPhones, iPads, etc) possessing skills to own (or pwn) networks and other electronic environments. And though iNinjas are masterful, they also posses a willingness to help and mentor others in the arts.

Dude, I can't believe an iNinja got into my network?

Guy 1: I wonder what I can do to penetrate this site?
Guy 2: Ask around, maybe you'll find an iNinja

iNinja by LankAsif September 9, 2011

Ininja 

The cause for everything.
Your mistakes, another word used to be sneaky.
For your everyday use.

Let's be Ininjas together!

Ininja by swellxox May 17, 2011