ninja swimming

Swimming in a stranger's pool in the middle of the night without getting caught.
Bonus: going through a neighborhood, swimming in as many backyard pools as you can in one night.

While the rich people went to Cancun, my friends and I went Ninja Swimming during spring break.

by I'mNotThatOld July 23, 2016

frosty ninja

A ninja covered in sperm.

You're such a frosty ninja!

by InternetRulesMatter July 4, 2016

ninja

Euphemism for the derogatory word "nigga"

Hey, whasup ninja!

by dangnuggets July 1, 2016

Ninja Flip

Prior to the moment of ejaculation, switch orifices to the surprise of the recipient.

Person A: Jessica was shocked to have a mouth full of cum after doing it doggy style.

Person B: Yah, she got ninja flipped.

by <>< thefishkid June 22, 2016

ninja bunny

Just a change who can quietly and quickly get across the stage without being noticed.

He is a ninja bunny.
He was quick like a ninja bunny.

by Fast Ninja bunny January 24, 2018

Ninja dick

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.

by humansvs aliens January 1, 2017

Cum Ninja

A very stealthy motherfucker that blows a load before you know it.

Jesus, that was one cum ninja.

by TylerStevenson January 3, 2017