I often have dreams in which I act stupid, get laughed at or hurt somebody.
For example: Last night I dreamt there was a very valuable vase and I was told not to break it at any cost. Of course I accidentally dropped it. Everyone was standing around me in a group and telling me how stupid that was.
In the same dream, one of my favourite teachers wanted to talk to me about something serious (don't remember what), but I acted like a total ass and yelled how it didn't concern him. He was pretty sad and disappointed.
I think this might reflect how I sometimes hurt people by disregarding social rules, and the first part might be kind of a "flashback" to the time when I was bullied.