Ah, a subject close to my heart!
We live in Singapore. Husband and I are White British, our adored (adopted) son is mixed (various races) Asian.
Singapore is OBSESSED with categorising race, such that when you go to the dentist you have to declare race (we put human).
In the UK people are very good at not visibly reacting to the fact that DS is a different colour to us, but in Singapore we get a lot of people stopping in the street to gawp with their mouths open (I kid you not!). As you can imagine, this is somewhat irritating!
Complete strangers ask us what race he is, and there's no easy answer (partly because we don't entirely know). We wento to a kiddie birthday party and a total stranger asked us this then "Could you pick what race you wanted?" "Er, we didn't care".
At the moment he doesn't understand, but quite concerned how to politely tell nosy strangers to sod off when he does.
Have thought of "Well we hoped he'd be human, but as it turns out we think he may be superhuman" but that may be too subtle. Or possibly we'll whip out a card and read off "12.7% Indian, 12.1% Hungarian, 4.5% Chinese, 6.8% Polish etc etc".
In the meantime, am going to get DS a tee-shirt that says "No I'm not Brad Pitt....."
And on the back ".... and she sure as hell ain't Angelina Jolie".