When you take your DC into town and you need the toilet yourself for a number 2, and there are lots of people about, your DC says
"ooh look poo, you pooed in the toilet, good girl mummy, ooh a big fat poo, well done mummy, aren't you clever, have you finished yet, dirty bottom, wipe your bottom, good girl mummy, flush chain, wash your hands that was a big poo!"