ninja 

Used as an adjective, "ninja" means the same thing as "beast", "wicked", "awesome" and the like. It can only really be used when someone does something REALLY awesome, otherwise it will lose its cool factor. Often used like "That's so ninja!" or "You're so ninja!"

Bob: Someone shot at me when i had my back turned, and i caught the bullet just before it hit me!

Joe: Woah! that's so ninja!

ninja by Weaselhoo April 19, 2009

Ninja 

1. See Chuck Norris
2. An awesome pwnage person.

1. Did you see the ninja roundhouse that guy in the face?
2. I AM NINJA

Ninja by OMGSTOPSEIFJPOIESJFF August 19, 2009

Ninja Skills :) 

Being overly beasty and awesome.!

Example : Luci and Chase have NINJA SKILLS :) !

Thats a fact fer sure.

Ninja Skills :) by SmileyLuci April 15, 2010

Ninja Dinosaur 

Most amazing type of dinosaur.. Frequently is seen in New Zealand, especisally Howick College.
The Ninja dinosaur seeks out all tw*****t and Ju***n Bi*ber
lovers to convert them to avergeness.
Loves colouring books, Wheres Waldo, Harry Potter, Unicorns, Llamas and Star wars

Go on Mlia.com to find the Ninja Dinosaur

Ninja Dinosaur by HappinesIsTheColourBlue July 7, 2011

Rune Ninja8 

A RuneScape nerd who completed RuneScape in a year and always fails to get hilts.

Rune Ninja8: FFS MY FUCKING HILT

Rune Ninja8 by Jess| December 13, 2009

ass ninja 

gay guy who likes anal

ass ninja by Jesus June 6, 2003

Ninja Cat 

Some fucker who thinks he's a badass online, but in reality isn't shit. Yet another nobody who likes bullshit like "lolcats," martial arts (but probably has never bothered to learn any) and using words like "kitteh" and such, while thinking he is some kind of tough guy at the same time. Probably spends most of his income on his addictions of WoW and "adult" anime shows.

Ninja Cat thought he was a badass after making an asinine claim on a forum. Later that night he stepped outside of his building to buy anime porn after a failed WoW raid and mouthed off to a guy, who struck Ninja Cat in the head with a baseball bat. He was left to bleed on the concrete, and when his fat goth girlfriend came to check on him, she found his stash of anime porn and dumped his worthless ass.

Ninja Cat by Nerd Please May 27, 2009