ninjaism 

The art of a supperior ninja compared to the lesser ranked ninjas.

I have a bachelor degree in ninjaism; I have a doctor in fucking ninjaism.

ninjaism by SWEITZ December 20, 2008

Ninja Candy 

Any over the counter pain supplement ibuprofen

Andrew took ninja candy for the pain in his knees and ankles.

Ninja Candy by Schmahxgn January 20, 2009

Ninja 

A general term for any STD. The Ninja creeps up on you when you least expect it to. Having unprotected sex is a good way for the Ninja to get a hold of you.

Guy 1: I haven't been feeling very well lately...
Guy 2: I bet that chick you hooked up with at that party gave you the ninja.

Ninja by Latina_LC July 29, 2009

Ninja 

Variation of the term nigga, used to refer to a person of Asian descent. If someone is your ninja, he/she is your Asian friend who you are comfortable with.

"Hey, this ninja over here just got us some nice seats!"
"I'm gonna bounce. See you later, ninja."
"Ninja, you don't know what you're talkin' about."

Ninja by HayyItsRay August 19, 2009

Ninja 

The professional term for 'creeper'

I stalk him so well, it's almost like I'm a ninja.

Ninja by Mr. Sneakers October 15, 2009

ninja 

a well respected asian

chong is a ninja

ninja by kong pow November 19, 2009

Ninja 

You don't want to sound racist so you automatically say ninja.

What's up, my.... ninja

Ninja by surfer97 April 2, 2010