An unaccompanied female who, while in the presence of a male or males, assumes an angry, scowling face with the intent of discouraging any potentialcommunication with the nearby male/males, as if they had any intent to institute such contact to begin with.
Didn't the expression on that scowlface back there make you think of a car? Myself, I was reminded of a '54 Buick.
Looking like you have the down syndrome or other form of retardedness. This does not mean you are retarded, you just look like it. Slowfaced features include lack of defintion in face, open mouth for long periods of time, and vacant stares for extended periods of time.