I would pair that with making them explain though. 1, It's fair and reasonable. No one reasonable can have a problem with it. 2, The response is more informative than the initial event itself.
If it's unusual, then they should have no problem saying that and even apologizing. Or do they act like that was fine and why are you such a baby?
Basically the same way I'd react or expect anyone else to react to the same action in any other context.
"What's up with that guy?" or "What was that?" Should be easy enough to answer.
The difference between "We don't know, and we apologize for that." and "What do you mean?" tells you more about the culture than the intial act by that one person.
If it's unusual, then they should have no problem saying that and even apologizing. Or do they act like that was fine and why are you such a baby?
Basically the same way I'd react or expect anyone else to react to the same action in any other context.
"What's up with that guy?" or "What was that?" Should be easy enough to answer.
The difference between "We don't know, and we apologize for that." and "What do you mean?" tells you more about the culture than the intial act by that one person.