Well, there's glancing and then there's staring.
If I'm out with my wife and we're in the N.T., I find that we're often on the receiving end of a lot of out-and-out staring - often by senior citizens, but also frequently by middle-aged housewife types. We're talking head-turned, mouth agape staring.
My wife is a locally-born woman. I am perhaps not as handsome as she is attractive, but I'm not obese, a mutant, burn victim, etc. either. There's no great age disparity or anything else that could conceivably warrant an inordinate amount of attention ... except that I happen to be white and she is not.
Although it's easy to tell oneself to ignore it, and we usually do, I occasionally stare back with the same zombie-like expression that I see on their faces ... or ask them, in Cantonese, if they like what they see. Without fail, they quickly look away without saying a word.