Still on my eldest daughter when she was a 6 year-old kid.
We were having our meals at one of the KFC outlets in a shopping mall, facing the main road. She pestered my wife to buy her a belt. My wife explained that belts were meant for boys and not girls. Looking out acoss the road, she spotted a lady waiting for public transport. She said, "mummy, that big sister is wearing a belt, can you explain?" My wife told her that only adults wore belts and promised to buy her one when she grew up. She replied that when she grew up, she should be able to buy one herself and she can even afford to buy us one. She complained that her mom was talking about the future and not the present.
After our meals, we went shopping. She kept running around. My wife told her that if she misbehaved, she will call in the police to catch her. Instant reply from her, "If I am apprehended by the police, how many daughters are you left with?"
Nowadays, children are smarter than parents. You threatened them with police, they frightened you with simple mathematical symbols ..... the minus sign.
Getting ready to perform on stage