Many insidious ways language plays in. Ever noticed how men insult each other? Don't be a p*ssy. He cried like a girl. They tell their little boys not to throw like a girl, or run like a girl.

Plus, we have different words for the same behavior depending if it's a man or a woman. Men are aggressive, women are bitchy. I could go on, but you get the idea. Good read, thanks. :)