Human Submarine

1. (adjective) a pregnant woman swimming

2. (noun) a submarine made out of human flesh

Commenter: a pregnant woman swimming is a human submarine

2nd definition---

look at that foreskin submarine!

by amogusrule34 July 23, 2021

submarine project

A side project that you are working on without involving upper levels, like a hidden/secret project

He had his own submarine project going on this entire time!

by Kablammis November 16, 2016

toilet submarine

Those turds that aren't floaters or sinkers, they bob in-between.

Steve: Dude, check out what just invaded the crapper.

Bob: DAMN!!! That is one huge toilet submarine!

by ed! June 10, 2014

The Yellow Submarine

The act of urinating directly into a girl's butthole. In many countries completing this act is the first step into manhood.

So I was buttfucking this chick last night and really had to piss, so I just gave her The Yellow Submarine. It was really messy but totally worth it.

by Slam Jr. December 17, 2008

russian submarine

The act of taking a shit and freezing it, then proceeding to perform sexual intercourse whit the frozen dookie (the shit).

"The dildos were on high demand, so Shaqueefah decided to make a russian submarine."

by Seymoure Assholes April 6, 2007

Velcro Submarine

When someone has been for a number two, and once flushed the toilet sees their poo laying on the base of the toilet bowl. This is known as a 'Velcro Submarine' for its gripping capacity and submarine shape.

"Mate, I just destroyed the toilet and there's a Velcro Submarine that wont flush!"

by tlmal89 September 21, 2011

Mayonaise Submarine

A sexual position/move in which an of age & consenting woman gets into a bathtub full of water while wearing a snorkel. A guy sits on top of the submerged woman and rubs one out into the snorkel.

Girl: "My feet are still pruney from last night."
Other Girl: "What happened?"
Girl: "This guy took forever to Mayonaise Submarine me!"

by RedOctober1 October 5, 2011