I get asked a lot about my "heritage." I hate that word, the concept, and everything that tags along with it. In a lot of situations -- social, professional, or other -- I find it completely out of context and irrelevant. Sure, if you're talking about your grandmothers' cooking, it might be a salient thing to ask, but the majority of the time, it just makes you sound ignorant, especially if you push for an answer when the subject seems uncomfortable. Then you're just rude.