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 had never heard that before. Is that a region or country-specific thing?
Definitely not a common phrase. I’ve never heard of it (from Spain) and I just asked about 10 others from other countries and only one has. We usually would just say clockwise or counterclockwise