Saying "so what" is a wonderful way to respond to an unpleasant person, who you have no energy for, and the bully surely fits that description.

“So what?!” Is a slightly annoying and possibly antagonistic thing to say, so definitely don’t say it to someone you want to get along with, unless you’re joking. It’s fairly mild toward a bully, but it could push a someone who is a potential safety threat right over the line, so you need to keep threat assessment in mind before making even harmless moves like this.

However, with almost every bully, the beauty of saying, “So what..?” is that it’s totally benign (harmless) but also obnoxiously hard-hitting. It goes under the radar but gets under their skin.

Here’s why: "So what" is used to show disregard, contempt and challenge, but nobody thinks about it that deeply  ...