A Copulation Cop is an person that is completely against the act of sex. As a result they do everything in their power to make sure nobody else is able to get any type of action. (ESPECIALLY BEFORE MARRIAGE)
The reason for being if you are a male.
Common evolution theory states that the man's instinct to copulate overrides all but the most basic functions of survival. If you’ve ever been a member of a fraternity you understand.