Lips

My boys were drawing pictures the other day. I overheard them talking about their artwork and one of them said, "You have to draw lips on that one. It's a girl."

It made me stop and think. Why do we always think of men as lipless and girls as having lips? I myself am somewhat of an artist, and whenever I would draw people, when I drew the lips, they always looked like a girl to me even if the subject wasn't. Same thing with eyelashes. Obviously, men and boys have both eyelashes and lips, but it's weird that we think of them as not having them. At least when it comes to art.