My daughter is small and very funny. Last night we were talking about her pet hamster: "Mummy, why is Chester 'urnal'?" "Oh it's not 'urnal' dear it's 'nocturnal,' I replied. "He's nocturnal which means he sleeps in the day and wakes up at night." "Oh." She replied. "You get PEOPLE that are nocturnal don't you mummy. People like Uncle Dean." "Uncle Dean? Why do you think Uncle Dean is nocturnal?" I asked genuinely puzzled. "Because he lives in Australia Mummy!"