by RFC 1459 March 16, 2003
basically doing everything a ninja (killing sneaking around taking out pirates the usual) does without being seen or heard
by the true ninja August 29, 2006
by Joshua H May 26, 2006
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.
by CPepe September 21, 2005
Ninja has no definition as Ninja cannot be defined
by The only real ninja here March 02, 2010
by Sir Jesus H Christ January 25, 2005
To insidiously and calculatedly disseminate massive quantities of misinformation in order to completely obscure and divert attention from the real meaning of something nefarious.
Hack.
Hack.
The real ninjas ninja'd the popular websites and online dictionaries with bogus information about ninjas. By doing this, they diverted attention from the cryptic underground hacking book about ninjas entitled "Real Ultimate Power."
by ham-man July 11, 2008