What were you thinking?

What were you thinking when Junior threw his book at Mr. P?

I thought that Junior was going to get suspended or worse... the book was going to be about him complaining about how Mr.P . hates him. One of the things that really annoys me in books is if the character is always pitying him/herself or constantly complaining about random things over and over again. Or ranting on about one thing for like half of the book. Now that I can not stand. When i found out that this was not going to happen I was so relieved.