Having sex as quietly as possible because there are people who could possibly hear you if you went at it the usual way.
My parents are staying in the guest bedroom next to ours so tonight we will have to have Ninja Booty.
by GassyLittleElf April 20, 2007
Get the Ninja Bootymug. Describes a mate or partner that has perfected his craft through years of seeming like a great catch when in all actuality...he suddenly, and stealthily reveals himself as a complete douche bag.
Great husband and family man...and poof, the douche ninja comes out of nowhere and reveals that he is a cheating, lying scumbag. You had no idea. Surprise attack. Many victims.
by Sonny James August 29, 2013
Get the Douche Ninjamug. by moshpit-23 November 30, 2006
Get the Ninja-Rinemug. When one is running in the grass, on the blacktop, ect. and trips for no apparent reason which causes them to fall on their face.
I was playing football in my backyard and running in hot for a touchdown when suddenly at the 5 yard line damn ninja ants attacked me just before the victory.
by keganzues November 9, 2010
Get the ninja antmug. A person who occupies a bathroom stall and refuses to make any BM noises until the entire bathroom has been vacated. Occasionally, a bathroom ninja will even go so far as to stand on the toilet seat to avoid detection by other bathroom-goers.
Jacob hid in the shadows cast by the stall walls like a bathroom ninja until the final shitter had left the restroom.
by timr211 August 15, 2014
Get the bathroom ninjamug. When someone appears or disappears from the surrounding area with few or no people noticing.
Also when you do a really cool ninja move, especially if you could never do it again.
Also when you do a really cool ninja move, especially if you could never do it again.
Joe: Oh, hi Jon.
Jon: Hi Joe.
Sam: Hey guys!
Joe: When did you get here?
Jon: He pulled a ninja.
Man: *drops glass*
Waiter: *catches glass without spilling drink*
Man: Wow, you just pulled a ninja!
Jon: Hi Joe.
Sam: Hey guys!
Joe: When did you get here?
Jon: He pulled a ninja.
Man: *drops glass*
Waiter: *catches glass without spilling drink*
Man: Wow, you just pulled a ninja!
by StarGazer453 October 15, 2010
Get the pulled a ninjamug. A Time Ninja is a person whos asks questions about a service and has no intentions of spending a dime with you on any of the services you just spent 30 min explaining.
Hello buddy how much is my air filter coolant flush and trans fluid exchange! Well sir it runs 300 dollars! Thank you buddy this is a great price! ok sir we can take care of this right away. Ok buddy go ahead and check them and ill come back another day! thank you for wasting my time ninja
by seawizz October 9, 2013
Get the time ninjamug.