look up any word, like turnt:
 
22.
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
121 98
 
23.
No Income, No Job or Assets. A brave urban warrior who roams the city streets and job queues in search of the next quest. Perhaps some nice shoes, with laces or a delicious hot dog with extra relish and cheese.

Can be found:
- with a tie around his forehead, warrior style, at his last corporate drinks before being let go. All thanks to that cute girl in accounts, a crab, the photocopier and the C.C.T.V.
- At a lucrative poker game, enacting an opera whilst generously donating their car to a small village, community college or pimp.
- Collecting spare change to seek revenge for a blood oath.
Man I almost feel sorry for Jack. The man has become a bloody N.I.N.J.A. since the whole bleach 'accident'.
by Matt_Decker May 07, 2008
27 9
 
24.
1Whats up my ninja?
2Nothin much just relaxin.
by Z-Mo [Florida] June 02, 2007
115 97
 
25.
Someone who can never be seen. Ever. Ninjas do not show up in photographs.
e.g "That guy is a ninja"
"What guy?"
"...I don't know. Where'd he go?"
by AwesomeMccooooooooool December 05, 2009
23 7
 
26.
True ninjas cannot be found. Not even on urbandictionary.
Bob: "Hey have you seen any ninjas lately?"
Ray: "No, I don't believe in ninjas"

-Bob is secretly a ninja
by wayfinderisaac October 03, 2012
16 1
 
27.
n. A warrior originating from feudal Japan who specializes in the art of stealth, assassination, sabotage, and molesting people without them even noticing. Ninjas are around anymore, but the term can still be used to describe one who is very sneaky, clever, sly or just a bad ass in general.

Here are a few requirements a Ninja would have had to live up to when they were active:

1. Ninjas must be able to make themselves unnoticeable in a empty room painted top to bottom in white.

2. Ninjas must be able to remain submerged in water for up to 7 hours minimum.

3. Ninjas must be able to survive a one-on-one fight against Chuck Norris for 6 WHOLE seconds.

4. Ninjas must be able to hold in a fart for 3 months

5. Ninjas must have an 11 inch penis MINIMUM. THIS WAS MANDATORY

6. Ninjas must be able to stop their own pulse for up to a week.

7. Ninjas can read a person's mind and memories just by staring at them

8. If a Ninja is captured, they must find a way to kill themselves.

9. Ninjas are expected to be able to get a 100% on every song on Expert mode in Guitar Hero 3. Failure will result in immediate execution.

10. A Ninja must have watched and memorized Nigahiga's "How to be Ninja" video
Person #1: "Would you rather be a Ninja or a Samurai?"

Person #2: "Yes"
by superdawge October 09, 2009
21 7
 
28.
v. 1.to move steathily, or in such a mannor as to conceal your actions
I'll just ninja into my cubicle so my boss doesn't notice im late
by Jester of AKs May 29, 2005
17 5