Things I Can't Say Out Loud

-People who KNEW they were being rude will know you've caught them at it and will mumble excuses and shut up. You've shown them that behavior won't be rewarded, which is what really stops them, and hopefully they'll make better choices in the future. - but you will get some people who do genuinely think that that WAS a normal question to ask because THEY get asked that by their mom/boss/other authority figure asks them things like that all the time??? This person is being taken advantage of and needs help. You then explain, as gently as you can, "No. That's actually really personal and sensitive information most people don't talk about because X*, and it's extremely inappropriate of Authority Figure Z to ask that. You, and everyone else deserve privacy and information security." they'll go "oh. I didn't know that." or some close variation, and then you tell them "no harm, no foul, and I'm glad you know now." and then change the topic. You probably won't get a landmark "oh my god I had no idea I'm reevaluating my entire life" moment, but just hearing that "No, that's not normal and not okay" is enough to get the ball rolling in the right direction to protect themselves.