Wifi Ninja

Someone who connects to a Wifi hotspot, without the owner knowing it.

A: Where are you?
B: Near a gasstation.
A: Hotspot?
B: Yeah.
A: Cool... Wifi Ninja!

by Artem_the_kid October 16, 2008

Ninja Ball

The act of farting into one's own hand, then "throwing" it into an unsuspecting target's face.

"Brian threw a ninja ball into Greg's mouth."

by Joe May 27, 2006

Nerf Ninja

The act of someone acting like a complete retard only to destroy his own reputation in attempt to gaining one

kid: Hello folks, i am your nerf ninja

others: wow, what a faggot

by IamPerson1 December 29, 2009

quim-ninja

any male who uses martial arts on a vagina. results may vary

I had no idea Steve was a quim-ninja, until he dragon punched my uterus last night.

by RossBC September 11, 2005

ninjas on fire

A synonym for something so kickass it could only be Halo 2. Stems from a speech by Jason Jones.

"Halo 2 is alot like Halo 1, except it's Halo 1 on fire going 120 miles per hour through a hospital zone chased by helicopters and ninjas. And the ninjas are all on fire too."
-Jason Jones

by Zuka July 14, 2004

Nintendo Ninja

A squadron of highly trained individuals hired by Nintendo to take down romhacks, copyrighted and leaked content very quickly.
They're never seen, only heard of.

For a second, you were playing a romhack, you blinked your eyes and now it's gone.
Fatalities including, but not limited to:

AM2R,

Pokémon Uranium,
SMBX,

PM,

every single one of Souljaboy's "consoles",

etc.

Person 1: Aww dude, I was gonna download this awesome romhack, but now it's gone.
Person 2: Oh, it seems the Nintendo Ninjas have done their work swiftly.

by Echmann May 31, 2019

Facebook Ninja

One who skillfully and stealthily changes others' Facebook statuses when they accidentally leave their computer on while they are sleeping, temporarily away getting coffee, etc.

Cheryl: Hey look at Matt's last status update...reads off computer screen: "I think Justin Bieber is really cute! <3 <3 <3" This doesn't make sense. Matt's not gay!

Victoria: That must be the work of a Facebook ninja.

by FuctButSects October 18, 2010