Ninja Fingers 

Kids, ever have parents walk in on you when you're supposed to be doing homework, instead you're playing a full-screen game? Adults, ever had a roommate/spouse/friend walk in on you as your viewing a hot A2M porno? Well then, you gotta employ some ninja fingers!

Mom: Timmy, are you doing your essay?
Timmy: *Alt+Tab* Yes mom, i am!

Rick(walking into Dick's room): Hey, did u catch the game last night!?
Dick: *Alt+F4* Yeah dude, that was awesome!

They both used ninja fingers to protect themselves.

Ninja Fingers by AspenW October 4, 2006

ninja shitting 

While at work or at the house of someone new you are dating, sometimes you don't want to have a loud shit. So, it is neccessary to be stealth like clenching your ass cheeks together to eliminate trumpet-like farts or take your dump very slowly so as to minimize the sounds of fecies hitting the water.

Phil: the walls are so thin at work I'm always ninja shitting.
Sarah: Yeah, I totally understand.

ninja shitting by Tequila_Mockingbird November 22, 2007

Ninja Jerker

One who constantly masturbates and is amazingly never caught or interrupted while doing so.

Woah, Timmy is such a ninja jerker, I'm surprised that little giblet hasn't been caught by his mom.

Ninja Jerker by 1337 sauce August 26, 2007

ninja-fuck 

To have sex in a quick and intense manner.

"I could tell by the look on her face that she got ninja-fucked last night."

ninja-fuck by Jordy-Time February 17, 2006

ninja log 

logging off randomly without anyone knowing, while your in the middle of something

so like dude we are going to run this way and your going to run that way ok

during your going to ( ALT+F4 )

oh that fucker ninja logged

ninja log by tomxel February 16, 2009

ninja turtle

the ninja turtle (can be used both in the singular and plural sense). is an ancient turtle, originally from the sewer region of densley populated cities. They are often accompanied by a large rat. ninja turtles hit their ninja "peaks" during their teenage years.

Turtles in a half shell, TURTLE POWER!!!

ninja turtle by Josh Stramoli June 29, 2004

Ninja Tits 

When a woman, be it through loose baggy clothing or some other means, does not appear to have a very impressive rack then reveals that she has fantastic tits.

So I really I liked this girl at work, not too cute but a lot of fun. But I only ever saw her in that dumb, baggy work uniform, so when we went to a bar and she worse this tight T-shirt, I was floored. She'd been holding out on the Ninja Tits!

Ninja Tits by Ford Leiden December 25, 2009