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?
Photo credit: https://3.bp.blogspot.com/-Giy8OrYJTjw/Tfm9Ne5o5hI/AAAAAAAAAB4/c7uBLwjkl9c/s1600/scan0002.jpg
Ah, so the car isn’t even important. You’re one of the people imagining standing on the screw. As long as you have a convention about which way is “up” on it, that does work.
You have to have a convention about Up to usefully describe a rotational direction at all. I don’t see how that’s relevant. Left implies an Up.
Yes, it’s true, you do. Left doesn’t really imply an up so much as it comes as a package with one, though. I’m not OP, but historically I had the same issue. I just didn’t automatically jump to “in is down, and I’m on the rim”, and instead was thinking about my actual physical left and right at that moment.