Definitions by Weaselhoo

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