Doom Cock 

A large, long-barreled, high-power handgun, preferably a revolver. From the comic book Preacher where the villain, Starr gets his junk bitten off by a trained Rottweiler and compensates with an obsession with large handguns. He stands in front of the mirror, holding his gun at groin level, saying "doom cock".

Doom cock.
DOOM COCK!
DOOOOOOM COOOOOOCK!!!!!!!!!

That .500 S&W is a fucking doom cock.
Here's where Dirty Harry pulls his doom cock.

Doom Cock by Dr. Badwrench April 5, 2008

Doom Cock 

Insertion of penis into each ear hole. One penis per ear hole equaling a total of two penises inserted into the head at once.

At Western Illinois University, a young woman was doom cocked in the elevator by Mark and Max.

Doom Cock by MaxBotkin April 1, 2008

doomcock 

The cock of doom

I have a massive doomcock

doomcock by Burgermonster58 January 1, 2023

Doomcock 

A big long cock that dooms you when you take it

I was terrified when I saw Frankie G’s big doomcock

Doomcock by Doomcockdaddy January 1, 2023