Michael [apropos of nothing at all, I assure you]: Mummy, do you know how chemotherapy works?
Me: I do, I suppose, if somebody has cancer, it kills the cancer cells but it kills other cells too. So it can make people really sick.
Michael: No, it kills the fast growing cells; that’s why all their hair falls out. Would you like to know about GHD?
Me: Um, no, that’s ok. Have you been reading the Medikidz books again?