The amount of inner ninja possessed by an individual.
That guy has so much ninjaness hes almost like Chuck Noris
by w00000000000t December 21, 2005
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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
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A better N word to use for your boys instead of the nigga word!!!
Bonzi: yo you know Ollie from Dallas
Quinn" Ya thats my ninja!!

by B0NZI June 23, 2007
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Someone who can never be seen. Ever. Ninjas do not show up in photographs.
e.g "That guy is a ninja"
"What guy?"
"...I don't know. Where'd he go?"
by AwesomeMccooooooooool December 5, 2009
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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.
Wrong: Ninjas are always fighting.

Right: There are about 8 ninja surrounding us.
by Zhaleskra March 10, 2007
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AIDS , HIV ..basically an uncurable STD
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
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A word used to avoid using the word nigga.
WTF are they doing, them ninjas is crazy!
by LittleDintheD April 1, 2007
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