A group (ninjas) or single person (ninja) that is trained in the martial arts. They are the coolest thing on the planet and live in competition with pirates.
Ninjas are so cool that I flipped out, kicked my mom in the face and crapped my pants all in one motion.
by MistahTom November 2, 2005

by B0NZI June 22, 2007

by AwesomeMccooooooooool December 5, 2009

A non-word used by people who don't know that:
1. There are no plurals in Japanese and
2. Pluralizing Japanese nouns makes them sound like verbs.
1. There are no plurals in Japanese and
2. Pluralizing Japanese nouns makes them sound like verbs.
by Zhaleskra March 12, 2007

you better watch fucking them hos, or banging anyone after yo cuse you know that ninja be lurking and he alive and well and is known to just pop up
by thought August 29, 2012

by LittleDintheD April 6, 2007

Someone who has the ability to mindfuck others. Someone who is stealth enough to complete missions with other ninjas that involve high risk situations. A ninja can usually "ninja" information out of other individuals who are clear 'un-ninjas'.
Ninjas are usually dressed casually, and people don't usually peg these people as actual ninjas, but rather, ordinary and normal girls. Watch out though, there couldbe a ninja at your workplace.
And she could ninja the shit out of you.
Ninjas are usually dressed casually, and people don't usually peg these people as actual ninjas, but rather, ordinary and normal girls. Watch out though, there couldbe a ninja at your workplace.
And she could ninja the shit out of you.
co-worker: blah blah blah blah blah
ninja: (in her mind) - good to know I just ninja'd the shit outta you bud. I'm going to go tell my other ninja this classified information.
ninja: (in her mind) - good to know I just ninja'd the shit outta you bud. I'm going to go tell my other ninja this classified information.
by ninjatwoxo July 22, 2011
