ninjaing- downloading software illegally and bad-ass stealthily because you're that awesome of a cyber ninja, also means you're doing cool ninja stuff BECAUSE YOU'RE A MOTHERFUCKING NINJA!
(to) ninja it- similar to "pirate it" or "pirating it" so see above definition
ninjaed- you've been ninjaed!
Real Life Ninja: (Can't download new video game) Ywaaaaah shaaooohwah! (Throws shuriken at computer screen)
Computer's Response: Ninjaing, ninja it, or ninjaed!
Game downloaded...loading...currently .000001%
Estimated time remaining is 1 Year!
Ninja: AAAAAAAAAAAAAAAAAAAAH Shooooomaw!
Pirate: Yaaaarh! Got me some nice booty.
Ninja: (Holding pirate's internet booty)
Pirate: ...AAAAARRRRGH! I've been ninjaed!
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.