An interesting question. Aside from looking between someone's legs, what is it about someone that makes us recognise their gender. Talking about the face here really.
Obviously when we look at a male we know we're looking at a male and when we look at a female we knows it's a female but when i asked myself HOW i knew that, i didn't know what the answer was. I'm sure there's a way to explain it so what are your thoughts?
I'm also not talking about the obviously like a beard. Image there was a male and a female next to each other both with no hair at all on their heads. How do you know that one is male and 1 is female?