Brown Submarine 

A feacal deposit left in the toilet bowl following an unsuccessful flush. Due to the density of human excreta these visual obscenities usually reside at periscope depth. Simple post-flush checks by the degenerates that leave them behind would render the Brown Submarine a thing of the past.

Bridge Officer: Captain! Bearing 030 off the starboard bow. Brown Submarine!

Captain: Set Depth Charges to Zero...Fire 1...Fire 2...

Bridge Officer: ....Enemy flushed sir.

Captain: Good work sailor, the Rear Admiral will be pleased.

Brown Submarine by BrianTrousers February 16, 2009

submarine races 

"Watching the submarine races" is a euphamism for making out (and more) in a car. It's the kind of thing a cop would say to be funny when he knocks on the fogged-up window of your chevy parked in back of the safeway to ask what you're doing there at 1am, as if he doesn't know damn well.

Cop: Hey, what're you kids doing in there? Watching the submarine races?
People in car: Gak! Where are my pants?

submarine races by creaternity April 28, 2006

Whatever sinks your submarine 

Follows ‘whatever floats your boat’ and means the same

Whatever floats your boat, whatever sinks your submarine

Whatever sinks your submarine by Chris.s123 November 12, 2018

Trouser Submarine 

A Trouser Submarine is a large penis which is used to destroy male anuses and male anuses only.

Oh go harder man, I want you to use your Trouser Submarine on me and throw your sea men overboard into my anus

Trouser Submarine by batthule June 24, 2011

Chicken Submarine 

The leftovers of a roast chicken are placed in the bed/pillow of a friend.

If Rob doesn't stop bitching out I'm going to chicken submarine him

Chicken Submarine by magbnl March 9, 2011

Chinese Submarine 

(noun) an alcoholic beverage concealed within a larger receptacle that prevents the rousing of suspicion when in public areas that prohibit the use of such substances.

Guy 1 "I'd love to see that movie tonight, but I really wanna drink."

Guy 2 "No problem. Just grab a large cup from the snack stand and make a Chinese Submarine."

Chinese Submarine by RD PS December 18, 2012

screen door on a submarine 

1. Useless, worthless

2. To cause someone to lose hope; To disapoint; Burst your bubble

1. I don't think she should be on our team. She's a screen door on a submarine.

2. (From the Venture Bros.)
Hank: Aww come on, let me at 'em, Brock! I probably know Judo! How many of those guys can make the same boast?!
Brock: No.
Hank: Why must you be the screen door on my submarine, Brock?

screen door on a submarine by Katie Tran December 22, 2006