by CrapsimusMaximus May 21, 2017

Someone who uses various diversions and distractions on opponents, such as explosive powders and invisibility.
The ninja knew how to be invisible to the enemy, from years of practice and chameleon-like camoflage in his/her environment.
by Solid Mantis September 27, 2019

You know that guy I took home hes was swift he was like a minge ninja in and out before I knew it....premature
by Chop81 April 3, 2021

by iiiCassh November 24, 2018

When somebody as an above average or otherwise huge penis when erect but shrinks to near disappearance when flaccid, or in other words vanishes like a ninja.
Example: That mother fucker has a ninja dick.
Example 2: I got ninja dick. that shit maybe 1 or 2 inches long till I get a hard on but then that shit massive.
Example 2: I got ninja dick. that shit maybe 1 or 2 inches long till I get a hard on but then that shit massive.
by Pickle Reeves May 3, 2023

When you stealthily sneak-into your girlfriend's home after her kids have gone to sleep, so you can get some.
by Ojete April 27, 2014

by djsmakywas March 9, 2012
