I'm the proud father of two little kids: my son is four, and my daughter is seven. Four or five weeks ago, we were sitting outside and we had a water gun laying around. Pretty typical stuff for a warm spring day. But as my son held the water gun in his hands, I saw the look in his eyes and I knew exactly what it meant. I said to him: "Do not shoot your sister with your water gun." No people, no animals—that's our rule with anything gun-related in my house. I figure because he's a boy, he's going to play with toy guns. That's just the way things are. But I can certainly tone it down.