I am writing a story for Summy (don't ask, it's a long story). As I finish a chapter, I read it to her.
So I was reading the first chapter, and I came to this line I wrote. A little girl is thinking it: "Mother knows a lot of things, but most of the time she does not know what I am talking about. A lot of grown-ups are like that." I was surprised by how vigorously she nodded and agreed.
I had just written down what I remember thinking when I was a kid. I did not realize that Summy thought it too. History apparently does repeat itself.