Ninja Bathroom 

A secreted bathroom, typically in a large and winding house that one can dump like a truck in with enough getaway time to not be caught. Also ideal for hiding.

"Who raped the Ninja Bathroom?"
"Pork and bean night, shouldve been faster. Hey where the fuck is Al P?

Ninja Bathroom by T_low June 12, 2010

Ninja Drop 

An exclamation of satisfaction with one's self for having caught something just dropped.
Though ninjas obviously never drop anything, this is how they would drop things (and what they would proclaim) if they were capable of doing so.
The feelings of alertness and dexterity associated with the drop/catch action preceding the "Ninja Drop!" stand
in stark contrast to the inattention and clumsiness that led to the exclamation in the first place.

NINJA DROP!

Ninja Drop by CainFang September 27, 2010

ninja abs 

abs that are hidden and only appear when it is necessary; in other words, an excuse for not having abs

My stomach's not squishy... there's ninja abs there!

ninja abs by flowhawk22 October 12, 2010

Ninja Masturbation 

Masturbation (by a man) that takes place silently.

Harry has Ninja masturbation skill!!

Ninja Masturbation by e4r5t6y7u8i9o0- November 25, 2010

Ninja Gaidance

What you desperately need but can't find when you are failing miserably at any Ninja Gaiden game for PS3

Guy 1: Ahhhh this game is so hard what do I do!?!?!

Guy 2: I would offer you some Ninja Gaidance but I don't have a fucking clue.

Ninja Gaidance by Ultrafiend101 December 4, 2010

Ninja Shower 

Scottish phrase used to describe weather conditions such as Heavy rain showers for short periods of time. Rain that appears out of nowhere and soaks you through to the bone quickly and then disappears without a trace usually followed by more of the same throughout the day.

Aye I got caught by a ninja shower. Oh ya hoor sir there's ninja showers happening. Got soaked by a ninja shower.

Ninja Shower by Kiltednutter August 14, 2017

NinjaEverdeen 

NinjaEverdeen is a ship including two love birds: Purple and Ninja.

Ninjaeverdeen is the best ship. -Purple

NinjaEverdeen by Tacoisnice February 6, 2018