My boys, 3 and 6, will come up and play with my long hair and will kind of look sideways at my husband's beard. They ask questions about who can marry, and make observations about men and women. I feel truly sorry for the kids who are being reared with absolutely no point of reference. Making these gender distinctions is clearly huge for them right now.
I agree. My wife babysits for a family who has a little boy that is almost 4. He is surrounded by his two sisters, his mom, and my wife. Very little male interaction. As a result, he started talking and acting like a girl. He even asked for a Barbie for Christmas. His dad realized that he needed to have more daddy/son days. Since implementing these days he is into all things little boys like. It all comes down to immitating their environment.