A combination of three penises forming in such a way as to create a small enough passage way so that a fourth penis may fuck that formation of three penises. Usually the formation involves two penises, creating the lower portion of the cockgina, and the final penis on top, creating the upper portion of the cockgina and increasing the friction felt by the fourth penis.
Burris: Yo man, have you ever fucked a cockgina before?
Me: Ya! Ty, Danny, and Scott let me fuck their cockgina last night!
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.