I was clipping my toenails in the bathroom while the four-year-old was taking a bath. “Look, daddy,” he said. When I turned, I found him with his head leaned back against the tub wall and his legs spread eagle playing with his little wiener. Unsure of what to say, I put down the nail clipper and braced myself against the sink. I thought I’d have a few more years before I caught him doing THAT. “Isn’t this cool?” he asked. The first thing I could think of to say was, it’s going to be so much cooler when you’re older, but I couldn’t tell him that. Instead, I picked up the clippers and went back to cutting my toe nails. I figured if I made a big deal about him touching his junk he’d just do it all the time. Eventually he put his wiener down and said, “Daddy, I’m just a boy. I have a penis.” “Yes, you do,” I said. “You have a penis, too,” he said. “That’s right,” I said. “Katie has a penis,” he said, referring to my girlfriend. “No, Katie doesn’t have a penis,” I corrected him. He looked at me dumbfounded. “What does she have?” Again, I was stumped. Did I give him the scientific name or some softer playground slang? I’d spent the last four years calling dicks “pee-pees,” but I didn’t know the female equivalent. I thought for a second and said, “Katie has a vagina.” “A bagina?” he said slowly, his mind blown. “Yes, a vagina,” I said, going heavy on the v sound. The four-year-old thought about it for a moment, mumbled “bagina” to himself, and laughed. “Do you have any other questions?” I asked. He shook his head no and then went back to playing with his Transformers.