You must have really big feet? What’s your shoe size?
Again, seriously? Asking about my shoe size is none of your business and again, it hurts my feelings. You’re acting as if I am a circus act, and my feet aren’t that big (only a size eight). My advice is to use the following test: What would you say to a woman with really large breasts? You definitely wouldn’t stare at them and marvel at the size. “My, what big boobies you have!” And you certainly wouldn’t ask her what bra size she wears. It’s just rude and weird.