This story is from a while ago now, but I spent a little bit of time in Berlin with a Vietnamese American friend. This story comes from one night at a reasonably nice restaurant.
Waiter: “Where are the two of you from?”
Waiter: “Where are you really from?”
Us: “Well, our parents are from Taiwan and Vietnam respectively.”
Waiter: “Ugh, Vietnam. There are too many Vietnamese people in Berlin, and they all open flower shops.”