ninja rock

A ceramic fragment, usually from a broken spark plug, used to break car windows for petty thievery.

The ninja rock popped the cork on the brand new 540i, and we grabbed an ID and a checkbook.

by JP July 27, 2004

urban ninja

Someone who practices parkour or freeruning.

Dude didja see that freakin urban ninja do a backflip offa that building!?

by m dog dd March 25, 2006

sexual ninja

someone who manages to enter and exit intimate situations with ninja-like stealth. also used to describe someone highly skilled in the art of sex.

-"at the beginning of the night i had no intention of bringing him home, but before i knew it we were in my bed."
-"my goodness! well, was he good?"
-"amazing. but after we were done i closed my eyes for a sec, and just like that he vanished without a trace."
-"ahh, a sexual ninja."

by woundedgazelle December 13, 2005

Ninja Nig

A black person who's trained in the ways of the ninja. Ninja Nigs typically possess exceptional night time stealth ability, as long as they don't smile.

Chris: "Do you think Wesley Snipes can ninja nig his way out of prison?"
Sean: "Shit no, nigga."

by dirtyjeff June 10, 2008

Ninja-turd

A ninja-turd occurs when your feces has the rare but precise trajectory to exit your anus and travel directly into the toilet pipe so that when the defecator turns to examine his/her excrement it remains hidden as if it was never there...(like a ninja)

Defecator: Wow I just pooped, let me see what I did.
(Stands to turn and look)
Where did it go? I know I pooped, but its just not here...ahhhh damn you ninja-turd!

by KingDestiny GS '11 April 1, 2009

Herpes Ninja

One who can have sex with a herpies infected person several times and still come out clean.

I'm a Ninja I'm a Herpes Ninja!
Man I got away with sleeping with that cuz I'm a Herpes Ninja.
I can sleep with her cuz I'm a Herpes Ninja.

by omega123180 February 26, 2010

Hidden Ninja

When someone is about to perform oral services to a male, the male tucks his penis between his legs when the performer isnt paying attention. When the performer's face is close enough to the penis the male opens his legs, resulting in a surprise attack to the performer's face.

Johnny did the "hidden ninja" on Hailey, and she broke up with him.

by Sergiee Bear November 4, 2007