v. the act of stealing, swooping, or snaking something. usually the person who has been ninja'd upon does not realize it for a little while, and then they are mad when they find out that something of theirs has been ninja'd.
Hey man you ninja'd my chair. Why the hell did you ninja my book, Jordan?
by CPepe September 20, 2005
Very fast motorcycle produced by Kawasaki.
I have a Ninja 1100, it goes so fast it can rip off your eye lids.
by Joshua H May 26, 2006
Due to the fact we could not find any ninjas, we can not define them. We hope our apology is accepted. (But not by ninjas, for they never forgive, and they NEVER forget.)
That ninja is a great ninja, for we do not know what, who, or where it is.
by IfITellTheNinjasWillKillMe November 29, 2009
Ninja is a game in which two or more people must play. The game is played by slapping each other on the hand. You can only make one move per turn. Once an attempt at slapping the other person's hand is made, you must keep your body in that position until your next turn.
Person 1: Dude, my hand hurts from that Legit game of Ninja!

Person 2: Hella yeah it does, I pwned you in Ninja!
by Lavieta February 27, 2010
Facts (100% True):

-It only takes 1 ninja to screw 1,000,000,000,000 lightbulbs. and a similar amount of girls
-you can't see a ninja until it's too late
-ninjas can tell if a movie is good by looking at the cover
-The n word was a mispronunciation of ninja
-ninjas can beat mimes in the silence game
-a ninja always wins, otherwise they are not ninja
-ninjas don't touch the ground because it is afraid of ninjas
-infinity is just another term ninjas use to count their kills
-ninjas don't wear clothes, that is just their natural camoflauge
-ninja is the explanation for everything
-ninjas can swim on land
"Did you see that ninja-....?" (abrupt pause and silence).
by ~MR.D~ January 11, 2011
A universal replacement for any verb.
"Hey lets ninja us up a pizza"

"Your mom was all like, wanna ninja?"
by darrenism August 25, 2006
The single-handed most common ruiner of Erotic Stories
"I was having buttsecks but then Ninjas attacked. Bugger"
by Sir Jesus H Christ January 25, 2005

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