From random women at bars, to even your own mother - why is it so promiment?

"You are a "x/y/z, how dare you say that?"

"I'm really sad that I raised such a "x/y/z"

etc

Whenever that shit goes down, the only thing I can think of in doing in those situations is just smirking and not taking seriously / not replying, but my god, is it annoying.