1.Of or relating to a ninja being highly skilled in combat, stealth, and covert actions. Most often known for being stealthy and deadly assassins.
2. The ability to perform duties efficiently and without hesitation to the highest level of perfection without detection
3.An action against a person without the victim knowing what hit them
2. The ability to perform duties efficiently and without hesitation to the highest level of perfection without detection
3.An action against a person without the victim knowing what hit them
by Madnass July 10, 2012
Get the Ninja Stylemug. In Oregon Trail II, this term is used when someone in your wagon party dies inexplicably from cholera.
by A Dysentery Germ September 24, 2016
Get the Ninja Choleramug. (noun) Someone who sneaks rubbish and into their neighbours' bins when their own bins are full. A bin ninja usually comes after a large gathering has filled a houses garbage receptacles. The act generally occurs at night and requires much sneaking about.
(verb) To bin ninja something.
(verb) To bin ninja something.
"Man. That party was epic. What are we going to do with all these empties...the bins are full!"
"No worries man. We'll just bin ninja them into everyone else's bins tonight."
"No worries man. We'll just bin ninja them into everyone else's bins tonight."
by billybobboy June 2, 2014
Get the Bin Ninjamug. 
To ninja poof would be to smoke (marijuana, tobacco, etc.) while hidden, usually very near people. Bushes work well.
by Cordmeister July 8, 2010
Get the Ninja poofingmug. someone who operates a bicycle in dark or low light conditions with no lights or reflectors and usually wearing dark clothing. Ninja cyclists typically ride against traffic and/or on sidewalks in violation of local laws.
(after slamming on brakes) "I didnt even see that ninja cyclist blow that stop sign. I could have hit him"
by Bike Man November 3, 2009
Get the ninja cyclistmug. by xxBA115xFreaKyx June 18, 2010
Get the Ninja Assholemug.