Well, I liked this one better than the first one, however there were a couple of things I didn't.First, for being a kids book, there was a decent amount of indecent language: Zack's dad: "Damn these antiquated machines" and lots of use of the word hell - hell-bent, snowball's chance in hell, and ...
Butt wars is about a guy named, Zack, he saved the world many times from so called butts by destroying them with a plan in this book they have to save the world from toltal destruction from butts back from 650,000,000 b.c. Zack has seven friends: ned, grandma, eleanor, robobutt, forker, flicker, ...