I really enjoyed this book. It was a really light, fun story with a lot of humor in it. I think "Shut Out" is better than the author's first book "DUFF", in part because the side characters are much more interesting and more developed. The book in part discusses what it means to be "normal" when it comes to sex in high school, and I think the author did a pretty good job of talking about the subject without making the humor vulgar or degrading anyone's personal choices. 
 All in all it was a nice, albeit brainless read - would definitively recommend if you want to read something that doesn't make you think too hard.