This is just confusion to children. They don't need to be talking about sex. I didn't even know what gay was until I was 11 and going through puberty. Thank God my parents never discussed sex with me! What kid wants to talk about sex or sexuality with their parents? It's just awkward and weird! Let them figure it out on their own! These people are deranged. And you have these adult transsexuals teaching kids about sex… If a grown man went up to your daughter and said, "Hey sweety, I'm gonna talk to you about sex and what's between my legs!" He'd go to jail! So why should a transgender be allowed to?

Children don't even HAVE any sexual characteristics until they are about 8 years old.  That is why Michael Jackson was not interested in any children younger than 8.. he was only interested in BOYS! 
It's quite normal for girls to go through a "period" of being a "Tom Boy"  and having penis envy.    I always thought it was ironic that little girls typically want to have a penis.. but little boys rarely want to have a vagina (unless their name is Brucie).

http://info.emergencehealthnetwork.org/poc/view_doc.php?type=doc&id=37696&cn=1272