Every time a random gentile (by "random" I mean someone without any actual relationships with Jews, but who prefer to see everything from their own ethnocentric perspective, and frankly this is most of them) comes into a conversation about Jewish-Gentile mixed marriages, I want to tell them to shut up and go away, because no, YOU DON'T ACTUALLY GET IT.
Re: Non-fandom secrets
I don't tell them any of that, though.