No one is thinking about you. That stupid thing you said in the meeting, the thing you did in middle school, that pimple on your face that feels huge. It's entirely in our mind and everyone else is too focused on themselves to ever see or think about the silly things you're embarassed about.
This hasn't been my experience. I know tons of people who just revel is recounting stories about things other people did that were stupid or mad them angry for some reason, even years after the fact.