Do you want a spanking?
(We never had to use this one. In our case it was already too late.)
In our house, it was The Wooden Spoon. My mom used to carry it in her purse. When my brother and I would start fighting in the back seat of the car, she’d take it out and set it on the dashboard. Things would always quiet down real fast when she did that. She had an extended reach with that thing.