I think Freddie53 hit the nail right on the head. A short story: I help some of my friend's kids with their English homework. One of them was pretty freaked a few years ago and I had no idea why. Finally asked, he said: "Am being circumcised next month, the kids at school said that means they cut my thing off and make me a girl!" (In Europe circumsion is only performed for medical reasons among non-Jews, case the US-Folks are wondering why this one would be an issue.)
Poor little guy!
One of my best friends is a surgeon who does circumsions all the time. Got permission from his (vastly relieved not to have to discuss it with him) parents to watch her do a circumsion at the local teaching hospital. Took him, watched her snip a bit of foreskin off a very masculine guy (ok, we arranged for a guy who was big, muscle-bound hairy and hung) and then two weeks later she let him sit in on the outtake exam. Her patient explained that his own kids had been curious and he had showed them everything before and after, too.
When my friend's kid's came up a few days later he was able to deal with it.
Moral of the story? If his dad had shown him what a man looks like, had had the closeness to talk to him about being a man, the child would not have had such a miserable few weeks. There is nothing perverted or abnormal about children being curious. It is 1000X better they learn about it from their parents then from the low lifes in this world. Hmm, make that 10,000,000X better.