a person who's gender is indecipherable
Person 1: Is that a dude or a chick?
Person 2: I dunno. I haven't seen a gender ninja like that since the days of Hansen.
black man obsessed with Asian culture
An Afro Ninja likes things like video games, race cars, kung fu movies, anime
An un-explainable random white residue found on your clothing.
Yo Bro, Looks like you got ninja skeet on your new jacket.
In an MMORPG, the act of stealing treasure chests or other valuables by waiting for another player to engage any nearby aggro mobs and then ganking it.
"Dammit! That fucktard ganked my chest! I hate fucking ninja looters!"
Noun. An idiot from TJHSST and William and Mary who runs around in a bathrobe hitting things with his reinforced heavy duty umbrella. Capable of focusing his energy into a Super Bathrobe Ninja form.
Like other ninjas, he is a mammal and he does flip out and kill things, but purely in the name of good. Without the killing.
Rival to Zuki's Ninja Clan, and currently involved in an illicit affair with the rival clan's leader.
See: Your new demigod.
Wow, Bathrobe Ninja is really kicking ass and taking names today.
In reference to a ninja's testicles, or an adjective used to describe having ninja like testicles.
Joe: Man it took some ninja balls to wedgie that bouncer!
Dan: yeah, I know.