When you ( a male) is having sex with two other people ( male or female) and you fuck them in the butts back to back. Hence, you see an ASS, you see an ASS, and you went IN, or assassin ( which is a word used to describe a ninja).

Joe Schmoe: Hey bro, I just had a consecutive buttsex with these two smoking hot chicks last night
Douchebag Dan: Duuuuuude! You just had a Ninja Fuck!!!
Joe: Totally gnarly dude!!

Ninja Fuck by Jdawg96 December 17, 2013

Get the Ninja Fuck mug.

ninja-fuck

To have sex in a quick and intense manner.

"I could tell by the look on her face that she got ninja-fucked last night."

ninja-fuck by Jordy-Time February 17, 2006

Get the ninja-fuck mug.

Ninja-fuck

To be completely silent during any type of intercourse

(Friend A) "did you have fun with John Smith last night?"
(Friend B) "It was alright, but he Ninja-fucked me and im not into that. It was so quiet you could hear crickets!"

Ninja-fuck by BlowholeJoe June 28, 2023

Get the Ninja-fuck mug.

Ninja fucked

To have sex in an extremly fast, violent, but pleasurable (for both parties) event. The idea of "Fucking like a Ninja" is to get in, out, and off, before you can get caught, be it by parents, angry spouses, or even the police, in some rare occasions.

She got ninja fucked, dude. Right after they both got off, he was gone like a goddamn shadow.

Ninja fucked by Andrew Flanagan March 4, 2006

Get the Ninja fucked mug.

ninja fucker

Guy who likes to screw chicks violently and fast, like a ninja, sometimes in a public place. The girl is usually someone the "ninja fucker" has just met.

Man, after that quickie I had in the bathroom at the bar I feel like a stealthy ninja fucker!

ninja fucker by StinkyTee July 28, 2006

Get the ninja fucker mug.

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.

"Base we've got some square groupers floating outside of Miami harbor."

square grouper by slipsheet November 6, 2004

Word of the Day on October 7, 2026

Get the square grouper mug.

Bunhead

A girl who does ballet and only talks about ballet. Her schedule is filled with dance classes which does not allow her to do any other activity.

"Hey, do you know that girl Sally?"

"Yeah, she's kind of annoying. All she ever talks about it ballet."

"Wow, what a Bunhead."

"Hey Sally, you want to hang out this weekend?"
"I can't, I have dance."
"You're such a Bunhead."

"Yeah... I know."

Bunhead by Jen00 October 24, 2014

Word of the Day on October 6, 2026

Get the Bunhead mug.

trucker's tan

A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.

I had a trucker's tan after driving for 10 straight hours on a sunny day.

trucker's tan by population361 May 30, 2006

Word of the Day on October 5, 2026

Get the trucker's tan mug.

kidulting

The phenomenon where adults salivate at children's toys

Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!

kidulting by Emotional Cruiser October 12, 2025

Word of the Day on October 4, 2026

Get the kidulting mug.