I am starting to get a complex

I had to go into my son's classroom today, before school started, to retrieve a book that he had placed in his backpack. I had borrowed the book from his library over the weekend. I am trying to read all The Great Stone Face books, so each weekend I have been taking a book home. Some of you might think this is very strange but.... I also work for the school and I am friends with his librarian.
As I was talking to my son, he was arguing with me because he wanted to return the book but because it was out in my name I wanted to make sure Heidi knew I had returned it) a classmate of CAL's said to me "Mrs. L I didn't know you could read that book" I stood speechless (for me this is a rare thing) for a moment and then replied with "Yes, Chance I am more than capable of reading this book exactly what are you saying to me" Chance's face turned red and then he tried to rephrase what he had just said. Of course, I didn't let him off the hook that easy.