dookie ninja 

Someone who surreptitiously defecates in public by shaking the dookie out of his pant leg and letting it plop on the floor.

I was shopping at Wal-mart and saw a dookie ninja at the check out lane.

dookie ninja by reverend megaton August 11, 2011

bum ninja 

1) One, usually male, who engages in anal sex with another male, but who exhibits ninja-like speed, agility, or cunning during fornication.
2) A mostly derogotory term in the non-homosexual vernacular, something one straight man would say to degrade or embarass another. See also Butt Pirate or Ass Jockey.

1) We just kept moving from position to position, it was like he was some sort of bum ninja!
2) Oh man, what are you? Some bum ninja? Take a drink!

bum ninja by Samchancho September 26, 2005

Ninja fucked 

To have sex in an extremly fast, violent, but pleasurable (for both parties) event. The idea of "Fucking like a Ninja" is to get in, out, and off, before you can get caught, be it by parents, angry spouses, or even the police, in some rare occasions.

She got ninja fucked, dude. Right after they both got off, he was gone like a goddamn shadow.

Ninja fucked by Andrew Flanagan March 4, 2006

loot ninja 

A term commonly used in MMORPGs to describe a person who takes loot that is not theirs, or who continually jumps in and takes loot for themselves which by rights belongs to the party.

OFMG Poltric got the loot again! That's six times in a row he's taken it, the fuckin loot ninja!!

loot ninja by Bonestorm May 22, 2005

Basement Ninja 

A person, usually male aged 13-35, who practices inferior self-taught fighting, killing, or stealth techniques in the basement of his/her parents' home or in a basement apartment. Typical hobbies include collection of decorative 'ninja' weapons for the purposes of practice and display. Typical behaviours include exhibition of martial arts proficiency, provision of stealth tips, and demonstration of human pressure points.

"Anybody who carries nunchucks to a 7-11 is a basement ninja."

Basement Ninja by King Byron August 21, 2008

Ninja Gayden 

A mocking name for Ninja Gaiden, or just an alternate way of pronouncing the name, used by people who are either very bad at Ninja Gaiden or don't know how to pronounce Japanese words.

"I hate Ninja Gayden! It's such a waste of time."

"That's what you say about all games that you're bad at. You said the same thing about Touhou!"

Ninja Gayden by Kaymactimus August 24, 2010

party ninja

A person that parties so much, they become professional party people. They specialized in the unorthodox art of party. The functions of a party ninja include out competing all competitors in drinking, party games, and the art of seduction.

The party ninja, using covert methods of party, are so skilled that people can't figure out how they chugged so fast, drank so much, dominate in games, or how they seduce. .

The mysterious skills of the party ninja has long captured popular imagination of all party people worldwide.

Wow look at that party ninja, she's taking over the party!

party ninja by Tek13 22 December 10, 2010