Asklemmy

DROL: Dicht Rechts, Open Links.

I think I just prefer Links Los, which implies that the other way tightens.

Dutch, BTW.

"Eins og kókflaska" or "Same as a Coca Cola bottle", not universal in Iceland though

Gas pipes. All gas fittings are reversed threaded. So it is virtually impossible to connect one to the other.

I don't think we have a Swedish one. But we call clockwise "medsols" and counterclockwise "motsols". Meaning "with the sun" or "against the sun" Does everyone have reversed threads on plumbing or is that a Nordic/Swedish thing? All plumbing has the reversed rule, left tightens and right loosens.

If japanese has one, I've never heard it. Japanese wife hasn't either. She was surprised it's a thing. She said maybe tradesmen might, but certainly nothing everyone knows

I remember it as right hand screw rule

Never heard it in Polish but we generally don't need a mnemonic to remember which side is left and which is right (except in politics).

One mnemonic is to imagine yourself opening a jar.

Probably a result of turning wrenches since I was first able, but that rule, to me, feels akin to "up the stairs take you up, down the stairs take you down".