stands for "du ma con cac" in Vietnamese. Literal translation: "motherfucking dick." - Used to describe undesirable situations that men put women, dickhead behavior, douchebag tendencies, prick-like attitudes or just trifling, lying, cheating men.
Girl 1: I got a call from my ex-husband today. He signed the divorce papers but never paid the fees and now he's giving me excuses why he can't pay.
Girl 2: Doesn't he have a job? What about his baby?
Girl 1: I know his baby momma doesn't work neither.
Girl 2: DMCC
Girl 1: DMCC all day, everyday for all these motherfuckers