Definitions by peppy the poopdaddy

master cock 

The act of peeing without holding ones penis. In essence the cock is control thus it is the master. It also asserts its dominance over other cocks who cannot achieve this feat, making it the greatest cock thus adequately named the master cock

Girl: Eww why didn't you wash your hands after peeing?
Guy: Its ok, I master cocked it.

master cock by peppy the poopdaddy October 15, 2011