Ninja-saur 

A combination of the most compadible creatures in this known universe. The Ninja-saur is commonly found in Mathews, Virginia, and only one exist. The ninja-saur is also the bond of a ninja and a dinosaur. A strong bond that's unbreakable, and also known as "comor".
subdefinition - Comor- love limited to friendship

The two ninja-saurs, Abbie and Noah, comor eachother.

Ninja-saur by Ninja-Nobi February 15, 2010

Ninja Muffin 

A type of person, who is awesome, and they are loved by their friends.

Or some kind of person who is quite insane.
See examples below:

Katie Cupcake Ninja Muffin
Elly Ninja Midget Apple
Steph Purple Cupcakes

Ninja Muffin by Cupcake98 April 14, 2011

ninja drinking 

1. To steal a sip of someone’s beverage.

2. At it’s most spectacular it is done with a straw, while the person is still holding their beverage.

There are lots of examples. If you go to facebook dot com slash ninjadrinking you will see a whole page dedicated to ninja drinking

Daniel Day Lewis showcased his ninja drinking skills in There Will Be Blood. Google "I drink your milkshake" and you will see the video on youtube

ninja drinking by drink ninja October 10, 2011

Ninja Inflation 

Hidden inflation, such as when a restauant serves smaller portions, instead of raising its prices. Since the reamains the same, it's not easily seen by the untrained eye; it's hidden like a Ninja. But the inflation is surely there!

Friend A: "Heyyyy, wait a minute...didn't this dinner entre used to always come with 3 pork chops? I've only been getting 2 now for a while...but at the same price as before..."

Friend B: "Yeah, man...that is called NINJA INFLATION!!!"

Ninja Inflation by ConManipulation January 24, 2014

Ninja Gaiden

Ninja Gaiden - One of the most hardest and ownage Xbox games to date.

Person One: "Hey, wanna come over and play Ps2?!"
Person Two: "Bugger off ya jock strap, I'm owning these Froobs!"

Ninja Gaiden by Ryu Hayabusa June 14, 2004

Ninja Foot 

Camel Toe on an Asian Female.

Asian Reporter Tricia Takanawa had a serious case of Ninja Foot on the episode of Family Guy last night.

Ninja Foot by Mah Frend Audrah! May 26, 2009

ninja fuck 

To penetrate another person without that person having knowledge or noticing.

Person 1: Whoa what was that?
Person 2: You just got ninja fucked!

ninja fuck by mario420 September 6, 2006