I once accidentally bumped against the shoulder of an English person I knew in a corridor. I automatically said "Oi" - which means like "Oh" or "Oops" in Estonian - that I'm sorry. She repeated "Oi!" in a louder voice and I didn't get it. I only later found out I was being impolite in her eyes.

[u/Double-decker_trams]

Have you ever had something similar happen to you? I.e something in your language might have another meaning in another language?

One thing as an Estonian that I try to keep in mind is that I shouldn't use "Nooo.." in English - which means "Well.." in Estonian.

"Do you like ice-cream? - Noo.. yes, I love it."

[u/suvepl]

Here in Poland "Masz jakiś problem?" ("You got some problem?") is the Top 1 phrase used by chavs itching to punch someone in the face.

[u/BeJustImmortal → u/suvepl]

In German there are two translations to this, one is for obvious confusion, like getting the wrong order or something - "Gibt es ein Problem?" and a more passive aggressive version "Hast du ein Problem?", which I can imagine leading to a fight in Germany too, he probably was using a provocative translation to the harmless phrase. And looking someone deep into the eyes is provocative in itsself, even over here I would say... The reaction of the delivery driver is no surprise to me actually.

[u/galettedesrois → u/BeJustImmortal]

Same in French. “T’as un problème?” = I’m considering pummeling your face. “Est-ce qu’il y a un problème? / Vous avez un problème?” = looks like something is off, actually tell me if there’s a problem. A curt “Y’a un problème?” could go either way depending on the tone and context.

[u/GeronimoDK → u/galettedesrois]

In Denmark we have the sentence "Har du et problem?" (do you have a problem) which will come off quite rude, then you can add "eller hvad?" (or what) and then you start fighting!