Submarines 

Big ass breasts.

"wow glenn, look at her submarines!"

Submarines by adsytank October 1, 2009

playing submarines 

This is when a naked guy is barely backfloating so that only his erect penis is clearly visible above the water.

Stew was playing submarines in the pool, but his protruding beer-gut and small penis size spoiled the effect.

playing submarines by filthyboss August 24, 2006

boats v submarines

A game commonly played in the UK for it's extreme banter and social skills
There are 2 ways to play this game, solo or duo.

Solo play;
The player fills the bathtub up to the brim with water and shits in the bath tub and has to decide whether it's going to be a boat or a submarine. If you choose to vote for the boat you think that it will be a floater, if you choose submarine it will explore the deep underwater mysteries of your bath tub. If you guess incorrectly of whether it's going to sink or swim you have to lay in the bath till said boat/submarine disolves.

Duo play;
Two players both sit on the brim of the bath whilst the bath is fulled with water, both players drop their load into the bath and decide whether it's going to be a boat or a submarine. If chosen incorrectly the player that guessed incorrectly puts on their scuba diving gear and gets ready to discover some treasures.

Man we played Boats v Submarines last night, I lost and got coated in shit.

boats v submarines by Zilyanasass April 6, 2014

bomb some submarines 

to take a big dump that is so huge that the water comes up from the splashing poop and hits your buttcheeks

One time, I took a dump so big, that I my dad had to stir it so it would go down.

bomb some submarines by Brendan Dean February 29, 2004

Northeast Submarines 

A company that should exist that doesn't, the opposite of Southwest Airlines

Today I rode a submarine with Northeast Submarines

Northeast Submarines by Billiam Beaver June 23, 2018

The submarine game 

The player lays on their back in the bathtub and attempts to make only the tip of their dick peek out of the water like the periscope of a submarine.

Mai: You sure took your time. Were you thinking about me or something?...

Sakuta: Actually, I was just engrossed in playing the submarine game

The submarine game by karabu_ February 20, 2019

Bat Submarine 

When someone makes a comment and someone else repeats it soon after, claiming it as their own. Often, but not always, trying to one up the original idea.

Emmet - We could build a submarine!
*short delay*
Batman - We could build a Bat submarine

Bat Submarine by Spankie, EarlyDays January 27, 2015