Ninjabater 

One who is able to pleasure themselves in public areas with little to no indications of their actions

A male ninjabater could pleasure himself in a bathroom stall at work

Ninjabater by Turrry June 19, 2009

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

NinjaMaster29 

"What's a joe shoe?"

A NinjaMaster29 is someone who slightly knows the anime JoJo's Bizarre Adventure,

and they know JoJo through memes.

It is someone who only knows part 3 and the latest animated part of JoJo,
and their favorite fight is probably Jotaro vs Dio from Stardust Crusaders.

Guys, we found a NinjaMaster29 in this discord server.

NinjaMaster29 by iAmTheBigGamer March 17, 2020

Ninjabate 

To masturbate, fondle, or otherwise touch oneself sexually with one or more unaware person(s) in the vicinity.

"She was so hot in that movie, I just couldn't help but sit back and ninjabate."

Ninjabate by Kurrie December 29, 2007

Ninjabation 

Noun

The act of masturbating in public or in front of someone without them noticing or getting caught.

I masturbated in the back seat of the car on the way to the movies....nobody noticed. That was some nice ninjabation.

Ninjabation by donkeygorilla October 31, 2011

ninjabustery 

1.ninja and ghost buster
2.to act like a ninja and ghost buster
3.a quality trait of being ninja and a ghost buster
or
1.a cool word to describe something/one

Dude, you are so ninjabustery!!!
Today I will begin my ninjabustery training.

ninjabustery by MasterNinja224 April 5, 2008

Ninjabator 

1. One who masterbates without anyone knowing.
2. One who masterbates & has never been caught in the act.
3. One who masterbates & no one has any idea they do so.

"Oh, don't worry about going into his room at any time, he's a ninjabator."

Ninjabator by Ejola October 14, 2012