A silent killer that orriginated from japan. They are common to were black cloths and carry an assourtment of wepons.
by Conman27 May 5, 2010
Get the Ninjamug. 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
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
ninja: n word
by Baznigger April 25, 2019
Get the Ninjamug. 
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.."
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.."
by MJ is cool. August 7, 2009
Get the ninjamug. 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.
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 29, 2011
Get the ninjamug. 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.
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.
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.
by Sniperx992 January 27, 2010
Get the Ninjamug. 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.
by mikeyurban July 27, 2018
Get the Ninjamug.