Ducking into my local supermarket on Saturday five minutes before closing time, I was reminded by my four-year-old just how mutual our teaching of each other is.
In the doorway was a woman trying her best to keep it together and stay rational while her toddler screamed and kicked at her feet. As we hurried past, Miss Four said loudly: "That's naughty isn't it mum? He's a naughty boy."
I didn't know who was more embarrassed - me or the poor mother trying to negotiate with her three-foot monster.