When a guy sends a pic or video of his penis without warning. it comes out of nowhere like a ninja
I was messaging jack about the school work, then all of a sudden out of nowhere he sent ninja dick.
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.
Ashley : Brady has a total ninja dick, it was so weird!
Amanda : Oh gross no way!!!
It is when someone has sex with someone from ISIS in a balaclava
Hey I just did a dire sneaky ninja with a guy from Syria the other day
a fucktastic trucker with all the skill of a ninja, like the abilty to kill you with a single honk.
"the ninja trucker set out to destroy all of the opposing fleets crew with a mxture of ti-chi and bad songs from the south
A portion of ejaculate that is discovered after due diligence is made to clean up after ones self. The location of which is usually surprising or unexpected.
"I just discovered a ninja load under the bill of my hat! I have been walking around unaware for an hour."
Ninja the most dangerous game is a word used for the best book ever,it's called this cause it is the best book ever And this is an objective fact
"Hey synecdoche you're wrong and I'm right,Ninja: The Most Dangerous Game is the best book ever urban dictionary says so"