I am baffled as to how somoene is supposed to answer such a question when they are born in the country they're standing in when they're asked that question.

I was born in the US. I am not "from" somewhere else so when I got asked this question in college, it went something like the one Aziz Ansari has in Parks and Recreation.

Them: Where are you from?

Me: Cleveland?

Them: No, I mean where are you really from?

Me: My mother's womb?

There are a lot of people (who still don't consider themselves racist) who take a certain amount of glee in "flexing'" on Black and Brown people like that. Its an understated way of letting you know you don't really belong in that space, even if its a space you created.