Ninja

To get an item from a MMORPG, saying they need it, which in fact they don't.
Then they sell it to other players for Money.
OMG! That noob ninja'd my LOOT!!!!
by Chunsa May 18, 2005
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Ninjas

Anyone that uses ninja shit to steal or hurt anyone in present day times. They are masters of destruction and normally operate at night but are known to ocassionally come out in the day if a "Mission" is deemed to be worthwhile. They are often considered to be normal in school except they have no after school activities so they turn to vandalism to fill the gap. They are masters of video games and computer systems and range in physical abilities normally fairly fit because of the things they do. DO NOT FUCK WITH A NINJA
1.) A bunch of ninjas tagged the school last night
2.) A fucking ninja slashed my tires now i have to walk cuz im a fag
3.) I lost my wallet when I left it in my locker, god damn ninjas G'ed up my shit
4.) Konrad bosselman and Robert Long are the most famous known ninjas disappearing after a store heist
by OXHEAVYARMSXO January 09, 2008
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Ninja

A word similar to nigga but for Asians.
Azn1: What's good Ninja?
Azn2: Nothing much my ninja.

or...

Black guy: What's good my Asian nigga?
Azn: Burning trees ninja.
by Deflecto December 29, 2010
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on the ninja

To get away with something with such stealth and skill that it can only be compared to that of a ninja.

Derived from the term 'on the sly' - To be on the sly, the active of sly. You can do something on the sly, maybe stealing something funny and legendary, like mine and Jimbo's road bollard. You could also have 'slying it'
First guy:
"Hey dude, I looked in the fridge just then and I cant find that steak that I had ready for dinner, Do you know where it went?"

Second guy:
"Not too sure bro, Sam was looking in there before. Maybe he took it on the ninja when no one was looking".
by Roarkey May 07, 2008
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NINJA

A business acronym for "Need Information, Not Just Advice."

An admonition to provide objective and fact-based data, not subjective opinions.
"Joe keeps telling Dave how American cars are so crappy and unreliable, really slamming them. So now, every time, Dave is like, NINJA, NINJA! Have some real facts ready, or shut up!"
by Ju1iet February 29, 2008
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ninja

In a forum, one who posts while another is still typing his post, making the latter's post seem repetitive or confusing.
dang it! bob ninja'd me and made me look like a total idiot that repeats everything he says!

dang, there are so many ninjas here that the whole thread makes no sense!
by tylertheoutcastzombie May 13, 2008
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Ninjaing

The Act Of Shop Lifting Or Doing Something Very Ninja Like.
Guy1 "hey what you up to?"
Guy2 "not much just going ninjaing"
Guy1 "oh ok cool could u get me a mars bar?"
by ParasiticVampyric March 03, 2009
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