[On the way to 4-year-old son's doctor appointment]
MiM: We're going to the doctor's! Do you want to be a doctor when you grow up?
Son: I can't.
MiM: Why do you say that?
Son: (Pause)...are there daddy doctors?
MiM: Yup. There are daddy doctors.
Son: OK, (with glee) I want to be a doctor!