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.
by Pencilz June 4, 2010
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The art of dissapearing from a room or area with people, without any of them noticeing. it is very awesome, and hard to learn. they are great at partys, and it makes a terrific exit. *very similar to "pulling a batman".
GUY #1: so, dude, have u like, seen tony around here? I beat him in a chugging contest.
GUY #2: yeah, but he must have left.
GUY #1: no way, i had every exit covered. the dude owes me 5 bucks!
GUY #2: dude! do u know what happened?? the dude must've pulled a ninja on you!
GUY #1: what i jerk. but you've gotta admit, its pretty cool.
by Quantum Kestrel December 9, 2011
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Acronym standing for. No, Income, No, Job, Asshole
Jennifer thought Rob was a NINJA which is why she did not take him seriously when they dated.
by Gdub's May 23, 2011
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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!
by Conman27 May 6, 2010
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person that quietly and skillfully gets things done without drama
I need more ninjas on my project team and a lot less drama queens.
by dadlyman June 4, 2011
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Fuck you kid. you're adopted

THE FUCK YOU JUST SAY TO ME YOU LITTLE SHIT?!

EHEHEHEHEHHEHAHAHAH HOW ARE YOU-HOW ARE YOU NOT IN FUCKIN SCHOOL?!

DIE. IN A FUCKING FIRE PLEASE.

WOW LOOK AT ALL THESE FUCKIN CUNT LORDS MAN
by Baznigger April 25, 2019
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A method used to silently shit and piss on a girl's face (usually a whore) after a long night of having intercourse, ending with the person leaving unnoticed.
Hey man, did you have sex with that chick yet?

Yeah, I pulled a Ninja on her.
by mikeyurban July 27, 2018
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