We had a PE teacher as our form tutor one year. He had a Dunlop Green Flash trainer as his weapon of choice. But that obviously wouldn’t be enough on its own, so he’d adapted it and had a thick metal ruler running through it.
He’d bend you over his desk and whack you so hard on the arse that the desk would move. And it was some sturdy solid oak thing.
It was virtually random too. You didn’t have to do fuck all. It was just your turn every so often. Sick fuck.
Let those who are always banging on about the good old, pre woke days, have a bit of that medicine.