Ninja Monkey 

a quick and dirty utility program written by software developers for software developers that can be used for ad hoc testing, viewing data, debugging, or other general purpose tools. It is usually passed around from developer to developer as other people find it useful.

Jim: It takes me 45 minutes to set up my machine for testing.

Bill: I trained a Ninja Monkey to do that in two minutes, I'll email it to you.

Ninja Monkey by QanwI' January 2, 2009

ninja shot 

Hi-tech Japanese stealth photography, the “ninja shot,” is the pursuit of upskirt / downblouse voyeuristic pictures of females with miniature, wireless, infrared, and pinhole cameras.

A 'ninja shot' is the same technique as that of a ninja or magician...requiring an element of distraction to keep the audience’s attention in one place and performs the attack or trick in another."

ninja shot by Yuumi Ka-Wai September 30, 2008

ninja 

(v):to steal, take or borrow with mind set of a ninja and with qualities that a ninja would potentially have

1."Dude, I'm just going to ninja one of your hot pockets if that's cool."
2. I just totally ninjaed the change I found in your floor.

ninja by Cap'n'fro February 6, 2010

Ninja Finger 

The finger one uses to slice fruit in the popular iPhone game, Fruit Ninja by Halfbrick Studios.

pdawgg: dude have u seen n3mesis's Ninja Finger? its like he's giving u the finger while he's playing!

gauravmehta: yeah dude he's got mad technique..

n3mesis: *takes a bow*

Ninja Finger by [n3mesis] May 18, 2011

Ninja Turtle Sex 

Sexual intercourse while wearing backpacks.

Hey Joe, do you want to have Ninja Turtle sex this weekend?

Ninja Turtle Sex by BrookesKitten May 8, 2016

Milk-Ninja 

A fat kid who throws milk at a faggots face because hes always being a bitch

Jesse: Hey antonio threw milk at carlos's face
Hugo :Yeah, hes a fuckkin milk-ninja , and carlos is gay

Milk-Ninja by Milk-ayla May 26, 2009

the ninja 

When you're jacking off in lecture hall, and a fat chick near you has her ass crack hanging out, you procede to blow your load in her crack while making a sneezing noise.

Dude, I was in lecture today, and totally pulled off the ninja.

the ninja by Rich-o December 28, 2007