What is Shotgun-cock?
1.
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----