Great article. My nearly 4 year olds have been wondering this same topic. I managed to find some excellent age appropriate books to help answer their curiosities. We talk about all private bodies parts as easily as an elbow or toe which my parents generation seems to find quite uncomfortable. Ha! You're so right though, quite often they don't after for specifics, just general information. Lately, my son has been putting toys down his shirt and telling me he is pregnant with a baby. Kids are so precious in their curiosity. -Aimee