The world has a lot of different standards for a lot of things, but I have never heard of a place with the default screw thread direction being opposite.
So does each language have a fun mnemonic?
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I think it’s fairly parochial, and sounds quite infantile to me. Growing up (uk) we just used clockwise to tighten.
Have a chat with some plumbers, builders, chippies, sparkys or engineers - assuming you are not one already. I think “leftie loosey …” is well known in the UK.