Ninja Mask 

To don a woman's panties over your face, so as to look like a ninja. Typically after she has worn them.

While I was fucking Laurie, I grabbed her panties and wore them like a ninja mask, gave it to her from behind, like a ninja!

Ninja Mask by Wolf Whitman November 23, 2014

Ninja Mask 

After someone drops a stank bomb, the other person covers there face with there shirt leaving only the eyes exposed. If stank is strong enough They will quickly exit like a ninja.

Man Look at Dave go, Kevin must had dropped a stank bomb, Its like he dissapered in a puff of dodo gas.

Was he even wearing a ninja mask?

Ninja Mask by mutant ninja turtle September 19, 2010

ninja gas mask

when someone puts there shirt over there face making them look like a ninja after someone farts in a closed off area like a car or elevator

Guy 1: *farts*
Guy 2: *puts shirt over nose*
Guy 3: oh god that stinks
Guy 2: hm good thing im using my ninja gas mask

ninja gas mask by imnotpedobearbtwwantsomecandy July 27, 2010

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

NinjaMasterBeta 

NinjaMasterBeta is a cool guy.

Wow NinjaMasterBeta, you are cool!

NinjaMasterBeta by John Kimble April 8, 2004

Ninjamas 

The replacement holiday for Christmas built on the belief that Santa is actually a Ninja due to his ability to get in and out of houses undetected. This holiday is typically followed 7 days later by New Chuck's Eve.

Merry Ninjamas

Ninjamas by EvilSpyBoy May 9, 2010

sans sheriff 

Lawless use of fonts or typography, with no regard to aesthetics or legibility

I'm putting this CV straight in the bin. Written totally sans sheriff.

sans sheriff by Jamarley July 3, 2019