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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Neither does Czech.
Neither does Russian. We only share right-hand rule from physics.
Nothing in Slovak either. Slavs got srewed.
I never could remember until I was well in my 20s nd heard the righty tighty thing in HIMYM of all places