Shotgun-Cock 

The hand motion made by african americans (usually) in an attempt to embarrass "Whitie". The motion usually starts with one hand up high and when "Whitie" isn't expecting it the hand quickly drops the the african americans penile area and then back up to the "whities" face meanwhile all of the African american Pack start to howl and scream scarying poor "whitie" away.

African american: Hey brother high five.
----Hand held high----
"Whitie": ...ok ----Raises hand----
African american: ----Shotgun-cock----
African american Pack: ---howling and screaming----
"Whitie": ----Runs away----

Shotgun-Cock by Trogdor <CTG> <3 Ninja's June 27, 2004

cock shotgun 

Cut off your penis then fuck youself in the ass with it. Next jam it into a loaded shotgun and blow your brians out.

Life's got me down I think I am going to go home and give myself the old "cock shotgun."

cock shotgun by Fetus Fucker October 15, 2009

Cocking the Shotgun 

When an uncircumcised male is forced to pull back his foreskin to urinate or in order to participate in various sexual activities. This occurrence often happens frequently in adjusting "The Unit" for comfort.

Friend 1- Dude, why do you have your hand down your pants?

Friend 2- Get off my case dick, I'm just "Cocking the Shotgun"

Cocking the Shotgun by lawnman7 July 18, 2012