Can I join in? I had a conversation with DD (3.5) last night which was prompted by me saying she's back at nursery today and she obviously started running it all through in her head and all this stuff came out. Some of it is normal tribal behaviour I guess and normal childhood stuff but taken all in one go it made me really 
It was stuff like this
She likes Boy X but he doesn't like her as he says "boys play with boys" and when she tries to play with him he says go away or tells her to hit someone 
Girl A saw her knickers and said they were horrible because they were plain (this came up a while ago as well so I bought her some with characters on)
Girl B says she is a boy as she doesn't have a dress with butterflies or flowers. Girl B says girls must have whatever clothes they like and they have to be butterflies and flowers (DD has been going on at me recently, wanting wear a dress every day and going on about how everything has to have flowers on it)
Girl B also won't play with her because she is a boy not a girl
And so it went on and on and on and I was just so 
Girl B is the one whose mother famously told me that I had to buy some Barbies for DD "before it's too late" when she was 2
Don't get me started on Boy X and his mother...
I know this is all normal childhood stuff but the pressure to conform, to like the "right" things, to have the right clothes, to be segregated along gender lines... For it all to come out in oner conversation made me so
Especially teh bit about Girl A taking the piss out of her knickers 
Anyway there you go. Sorry for rant 