I do look quite a bit like this and no I am not complaining.
Here's an example. A few years ago I'm in a grocery store at a posh mall in the city. This white guy, well dressed, about 45, walks up to me and starts telling me that I'm fortunate to have a mixed background for genetic reasons. He then launched into a scientific explanation of why this is so.I took him for a prof at the nearby university. (By the way he was talking to someone his own age not a kid.)
At times I have thought about responding with, "Didn't your momma teach you any manners?" but then whenever it happens I am always at a loss for words.