In Vienna, we say "oida waunst laung deppat bist daun hauri da a watschn owe dass da viatzehn dog da schädl wogglt!"and I think that’s beautiful.

Russian here. I've never heard this phrase in my life before. Maybe it's local, but definitely not common.

I guess 'Nobody asked you' isn't English?

Depends on the region. In my native it was popular to say ебало завали, which loosely translates into "collapse your mouth" where mouth is used in a sense where it's an organ for penetration during sex.

A relative new saying in German.

Person A: Where is the bus?

Person B: which bus?

A: Of people who asked?!

As native Russian speaker, this is terribly rarely used in this full format (and it's one among many), but genuine, I've heard it IRL.

"Тебя не ебёт, так не подмахивай"

This is highly and universally derogatory, you could expect to hear it from lowlife/criminal, which, unfortunately, is what most russians are lately, though. For russian nazi population, this implies that you are gay or a slut, depending on biological sex, and that's close to your life worth nothing. For the rest, this is just something nazies would say to insult you.

The first part alone, though, is quite socially acceptable and overused. I guess, because it's lost the whole lore behind it, and showing your knowledge of whence it came from kind of reveals that it's not just an empty word, but you mean it.

I'm a bit hyperfocused on swearing, am I? Was one of my childhood's special interests.

Honestly, "mind your beeswax" is also a rare gem, but not quite so rare.

:3==≈≈

Chilean Spanish? that's just a common Spanish saying

I've always been partial to "This is an A -- B conversation, so C your way out."

👉👈

Australia: Nunya

The Scouse British dialect has a nice term for this: "Geg out". As opposed to "Fred is gegging in", used when someone is trying to implicate themselves or become part of the group/conversation.
Someone involving themselves when they shouldn't be? Two syllables: Geg. Out.
No idea where it comes from but I heard it a lot in my youth. Forsomereason.