Ninja Mode 

When you're on Live Messenger and you tell people you're signing off then you change your status to "Appear Offline"...like so people think you have signed off but you're actually lurking in the msn shadows, waiting to pounce when someone cooler signs in.

Rach: "Here how can you be talkin it says ur offline"
Gill: "It's cool im on ninja mode so nobody else annoys me."

Ninja Mode by Gilly_Willy_aye December 25, 2008

Ninja Knocking 

A favorite pastime of Urban and Suburban children.

The child will knock on an unsuspecting victim's door, but before the victim has time to answer, the "knocker" will dissapear in similar fasion to a ninja.

Tyrese: Yo brotha, let's go ninja knocking.
Tyrone: Wurd up dawg, ima say we get the ol' bitch down the alley.
Tyrese: Hellz ya mother fool

Ninja Knocking by joejoebuffalo October 7, 2009

Ninja pic 

A photo taken of someone interesting, without the photographed knowing it and shared with friends. This is done by acting like you are trying to read something on your phone or taking a photo of a friend (accomplice) standing near them.

I snapped a Ninja pic of the lady with her skirt tucked into her tights and sent it to him.

Ninja pic by Fitchic June 30, 2019

Ninja Gaiden 2 

Awesome game where you go around killing ninjas, dragons and fiends with ninja weapons and fireballs (there are actually several different types of "ninpo"). It is the sequel to Ninja Gaiden for the Xbox (obviously), and you play as Ryu Hayabusa. It is also insanely hard and will require a lot of skill and patience, especially on Path of the Master Ninja, or even Path of the Mentor.

<BLIZZARDRULZ11216> I CAN'T DO IT, IT'S COMPLETELY IMPOSSIBLE, IMMA GO PLAY WOW CUZ IT R FUNNER!!11

<MasterNinja2983> ...Ninja Gaiden 2 takes a lot of skill. It's a good game, maybe you just need more practice.

<BLIZZARDRULZ11216> NO, IT'S PHYSICALLY IMPOSSIBLE!

Ninja Gaiden 2 by Xtreme2252 October 13, 2009

ninja tuna 

Originally one of the songs featured in Windows Media Player, this term has evolved to mean a good friend of yours, or a "white nigga." Black people are forbidden from using this term. It is strictly used by an elite class of caucasion friends.

Dave: What you up to ninja tuna?

Brian: Nothing just got done jerkin it.

ninja tuna by PweekOnYou November 9, 2013

Ninja Warrior 

Awesome. Simply Awesome.

Ninja Warrior's on? Awesome.

Ninja Warrior by Red Tornado March 8, 2008

ninja walk

When one rolls instead of walking.

Dude, we ninja walked home!

ninja walk by Papaya and Tangerine Jones March 7, 2008