Ninja-mas 

Only the best holiday ever. On December 3rd you have the chance to dress and act like the beloved ninja.

Dude1- I can't wait for ninja-mas!

Dude2- I alredy have my ninja stars polished!

Ninja-mas by Samankerrkid November 24, 2009

Ninja Masturbation 

Masturbation (by a man) that takes place silently.

Harry has Ninja masturbation skill!!

Ninja Masturbation by e4r5t6y7u8i9o0- November 25, 2010

Ninja Masturbating 

To covertly masturbate in the presence of others without their knowledge.

"At the bar I tried to listen intently to my friends at the table, but I was ninja masturbating and needed to finish off quickly."

Ninja Masturbating by ZombiUnikorn January 25, 2009

ninja master 

person worthy of leading a team of true ninjas (people that quietly and skillfully gets things done without drama).

Brian's a superstar at this company because he is a ninja master, and you have to be able to walk through walls to be a part of his team.

ninja master by dadlyman November 21, 2011

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 master 

The ultimate level of Ninjitsu, even higher so than the mighty Ninjalo. These crazy motherfuckers possess the maddest skills, and can kill anyone they want, but cannot be killed

My name is Ninjalo. I am a Ninjalo. I have been training in Ninjitsu for over 200 years, it will take me another 543 to become a ninja master

ninja master by Ninjalo March 31, 2004

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