Since I am a father and my sons are my sons, one of the things we have in common is our penises. There are three of us and we have three of them, one apiece. My wife, on the other hand, has a vagina. This means that penises are one of the few things my boys and I share that my wife does not.
Three- and 4-year-olds are often fascinated with and more than happy to reveal their private parts. Here's why. On a recent evening, my cousin's 4-year-old son ran into the closet after his bath. Suddenly, he threw open the door and proudly exclaimed to his mother and twin sister, "Look at my penis!