ninja beat

The act of silently masturbating while in the same bed as your significant other, likely while they are asleep.

My girl didn't want to give me head during her period week, so I had to pull off the ninja beat several times.

by Arjiff January 8, 2014

Ninja squirtle

A stealthy shart that sneaks up on you without warning.

I was on my way to the bar when *BAM*, Ninja Squirtle attack.

by L0L0 June 9, 2015

Ninja aggressive

its like aggressive (in the passive aggressive sense) but you dont know theyre being aggressive. ....sneaky aggressive.

not to be confused with passive aggressive

Like some farts (silent but deadly)

Im aggressive, but you dont know its happening. Im like ninja aggressive.

by edudnikihc August 1, 2016

ninja40

A Male minecraft player, who wants to get into the direct messages of many girls and who likes multiple ladys at once.

Person 1: Hes pulling a ninja40.
Person 2: I know right! hes so rude.

by Byrules101 February 18, 2017

Ninja Mission

When you do something you know you're not supposed to do (whether it's good or not so good) or when you do something that other people (like your parents) don't want you to do.

Well...sneaking out to Caid's party at 11 p.m. was a real ninja mission.

by avtor17 February 7, 2018

ninja handy

The act of receiving discreet pleasure in from a partners hand under a blanket, coat or table.

Dude, we were watching movies at Stacy’s place last night and she totally gave me a ninja handy with her sister in the room.

by Listerfiend May 18, 2018

Ninja Vulture

A roommate who steals your food in the fridge behind your back. They do it in a sneaky way by figuring out your schedule and stealing tiny portions when you’re at school/work.

“Dude I think Joe might be a ninja vulture.”
“Yeah that explains why my mashed taters keeps disappearing!”

by TheShuckDriver November 20, 2019