You can't scare me

I was feeling better today so I treated myself to coffee at my local coffeehouse.

I hadn't been in there very long when a group of high school boys came in, trying to impress a group of high school girls already there. Somehow, me sitting there, reading, gave them a challenge. And they decided to try to embarrass me. I finally looked up and told them I teach high school. Math.

They left me alone.