My father, brother and I were waiting to board the Staten Island Ferry; pre-1965. I saw my father eye was drawn to this figure with back to us with hair down to the butt; definitely a very full thick head of hair. The person turned around and revealed a full beard. "Damn hippie!" exclaimed my father. Hair will definitely draw the conclusion the object of the eye may be a woman.
Shape of the buttocks. Women has wider hips which should create an hour glass figure.
A view from the side, if not the front, showing breast, whether or not the face is concealed.
I think a person's mind's eye has been shaped by societal norms and expectations. A quick fleeting glance that catches only colors may key the mind to assume the person is a woman.
