2. A guy that likes to call you all the time and always knows where you are.
3. Piece of sex.
2. *Ring* Don: Hello?
Cotter: Are you at Chuck E. Cheese?
3. Girl: Hot damn, Cotter is pure sex, I want that in my bed now!
The act may also include arguing with the significant other's house-mates, to the point of violence. See also: "Becky Big-Chin"