by Karate ninja September 21, 2020

Michaelangelo slipped out of April's Pussy and ended up Cowabunging her in the Sewerpipe, causing a Hairyback Ninja Turtle
by Wogboy13 May 18, 2023

Ninja is a phrase now used to label a person you do dirt with. It's roots are found from the actual Ninjas who would move in the darkness of the night, never being seen, veiled in mystery, also usually committing crimes as Ninjas were actually farmers who rebelled against the Samurais who were rich men, soldiers, and basically part of the Govt. Now the phrase is used more commonly to friends who you may be committing crimes with and crimes usually happen at night. If you commit a burglary then those affiliated with you could be called your ninjas. Of course, a lot of people just want to sound cool and use the phrase though never committed any crimes in their actual life. So the phrase has also become just another word similar to words and phrases like homey, homeboy and nigga.
by PrettyBoy91 October 25, 2012

Inter-office mail that shows up out of nowhere. It just magically appears in your inbox and you have no idea who left it.
by badandy519 August 25, 2009

Trekking through snowy mountains with a sled on one’s back while using the sled as a snow and wind shield as well as a means to quickly slide through the snow as it is still attached to the back.
By ninja turtling, they found that they could quickly traverse any terrain in the snow without fear of obstacles.
by extremesledding December 20, 2021

stealthy individuals specialized in espionage and murder. They often use numchucks and fight with un-gloved hands
by tennis ball kate October 18, 2011

they are the same with Nintendo ninjas but worst, they come to peoples houses and sends a scary baby with red eyes to tear every organ in your body, or they lock you in your room with bio weapons tools to kill you.
by Evilwevil04 July 29, 2021
