The girl is on her back with her legs on top of the man's shoulders. As he cums, he throws sand (or any other fine granule...such as ground coffee) into her eyes. When she finally rubs it away, he is gone. Only then will she know the wrath of the angry ninja!
Matt: I met this bitch in a bar last night and we went back to her place to fuck.
Joe: What happened?
Matt: In the middle of it, she asked what I was doin' tommorrow!
Joe: What'd you do?
Matt: I blew my load my load on her face and gave her the angry ninja!
Joe: Nice.
Joe: What happened?
Matt: In the middle of it, she asked what I was doin' tommorrow!
Joe: What'd you do?
Matt: I blew my load my load on her face and gave her the angry ninja!
Joe: Nice.
by the wrath of the ninja May 21, 2008

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.
by Kiltednutter August 14, 2017

When one comes up behind someone and clandestinely humps them for a short period of time, and disappears before the humpee knows what has happened... Like a ninja...
Oh my God! At the French Creek trip, Dijon Berlin came up behind Jane Smith while she was dancing and ninja-humped the shit out of her.
by IO Echo August 4, 2009

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?
"Pork and bean night, shouldve been faster. Hey where the fuck is Al P?
by T_low June 12, 2010

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.
Guy 2: I would offer you some Ninja Gaidance but I don't have a fucking clue.
by Ultrafiend101 December 4, 2010

The verb describing the unpleasant movement of hitting ones scrotum from behind them, most often used when someone has their legs spread awkwardly apart.
by J.P.Hades May 14, 2009
