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’m German, and I’ve never heard that before. I’d be seriously weirded out by someone saying that or teaching it to their kids
I have to admit that this is rather old. So old, in fact, that it does not refer to the Third Reich but the Kaiserreich.