Need Help Finding a Book for DS

So Mr. Independent is 6 1/2 and really wanting to read chapter books. Unlike my daughter, he  attends public school, and unfortunately with that comes influences from others his age. Right now the "it" book is A Diary of a Wimpy Kid. I have not fully read this book, but what snippets I have read, and what I have heard about it, I don't like. From what I understand, it is full of name calling and bulling. While I am very happy at his eagerness to read, I don't think this is appropriate for his age. The language in this book is not even allowed at our house. It's not adult language, but I don't want my kids going around saying "idiot" or "stupid". My children still gasp and cover their mouth when "shut-up" is heard. So I am trying to find some fun alternative to this book. He wants something funny but not "babyish".

So what are your thoughts on A Diary of a Wimpy Kid?

And any suggestions on books would be greatly appreciated!!!!