I grew up with a sister. I never had a brother like my daughter does. I realize now how nicely sheltered I was from the differences in boys and girls. Until I was in high school I never realized exactly what the differences were in girl body parts and boy body parts. Yes I knew that boys had a "pee-pee", but I didn't realize there was anything more to it than just that, if you catch my drift! My poor daughter will always know what boys look like and what the difference is. I wish I could shelter her from knowing so young about boys and girls. Perhaps if I had a brother when I was little I would feel differently about it. Somehow I just think in this area of her little life ignorance would be bliss! Especially for her mommy!