Clara: "Mummy, what are nipples?"
Me: "They are a body part. They're two of them. On your chest. Winton has two as well."
Clara: "And when you have a baby the place around the nipples gets fatter and fatter until the baby is ready to come out."
Me: "Mmm. Well . . ."
Clara: "No, Mummy. I know that's right. Stop talking."