urban ninja 

Someone who practices parkour or freeruning.

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

urban ninja 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."

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."

Ninja Nig 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!

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.

Herpes Ninja by omega123180 February 26, 2010

playing fruit ninja 

the act of slitting your wrists

Marcus: i was playing fruit ninja the other day and...
kid: do you need help? <3

playing fruit ninja by inverted_bracelet_manufacturer October 11, 2021

ninjabate 

Verb. To Masterbate with utmost stealthiness, similar to that of a ninja.

Spirited Away was such as shitty movie, I had to whip it out and ninjabate to pass the time.

ninjabate by Narcism July 16, 2008