The book I read was diary of a wimpy kid. Greg has turned into a safety patrol officer in school. He terrorizes the kindergarten with a stick with a worm with it and Rowley takes the blame. Rowley takes the blame because he does not know what is going on. So he is sad because he can't be in safety patrol anymore.

I would be real angry if I really loved that job and said it was not me that day I let Greg borrow my jacket.