I-Ninja 

Great game released over any platforms.
Features a ninja that violently kills anything that gets in his way, including his sensei. The "I" stands for iron. Therefor the main charactor , Ninja, is an "Iron Ninja". The whole game reaks of bad karate movies!

Aw, look at the cute lil' ninja...!
Wait, did he just cut that guy in half!?

I-Ninja by ...? January 3, 2004

Mini Ninja 

a short dick or an asian dick

Jane: He was so fast that his mini ninja was steaming

Mini Ninja by The word inventor November 30, 2009

spanish ninja 

Very simular to the Ninja... this is an intense sexual position involving a man and a woman and a dildo, the way it is performed is
first, you turn off all the lighs in the room
second, you start banging the girl in the ass
third, you shove the dildo in her ass and pull out so she "does not know"... now this is where this and the Ninja differ... you very stealthly sneak around her side and scream TEQUILA!!! and give her a champion Dirty Sanchez.

Madonna:Damn, i got spanish ninjad pretty bad last night.
Me: Yeah you still have shit on your upper lip.

spanish ninja by air dick October 11, 2005

Party Ninja

n; Someone who stealthily sneaks into a party or social gathering they weren't invited to. Party Ninjas are also known to tear up the place and abuse its resources, disappearing without a trace like a Ninja.

Dude, that Party Ninja is laying the smackdown on the keg of beer! Grab him! Wait, don't let him get a way!! Wha... where'd he go?

Party Ninja by Jin Saotome May 14, 2005

Ninja stile 

1. A word used to describe an action or person with ninja qualities. (stealth, speed, mastery of various weapons and poisons, efficient and deadly combat tactics)
2. An action witch is stealthy or acrobatic

That was a ninja stiley move

Ninja stile by Tomás O'R April 29, 2006

Ninja Twat 

the act of sneaking up behind a female and hitting them in the vagina. Works best while walking up the stairs behind them. You can use a closed fist or an open palm.

Guy: *walking up stairs behind girl, hits her in the vag*

Girl: Ow! What was that for?!

Guy: Nothing... I just wanted to Ninja Twat you.

Ninja Twat by ilovebirchbeer_not April 27, 2009

Ninja Rim-Job 

When a bi-sexual woman gives a male partner an unexpected rim-job during oral sex in hopes of making him realize suppressed homosexual desires.

After Linda surprised Joe with a Ninja Rim-Job he discovered that he had long been ignoring a powerful erogenous zone thanks to his repressed homophobia.

Ninja Rim-Job by Knight Talker October 21, 2010