It doesn't matter whether your own teenage years are a distant memory or only yesterday, you will love this book. If you have your very own living, barely functioning teenager at home, you'll laugh until you cry. Or just cry. If you have younger children on the cusp of their teenage years, you'll definitely be crying, as you'll know that all the things you are reading will be happening very shortly and there is nothing you can do about it (within the bounds of the law, anyway). And if you are a teenager yourself, it's likely you'll laugh yourself silly because you probably think it's about someone else.
Either way, you'll be immersed. It's a frank and honest account of the incidents and accidents the author's own children got up to, with some of his own memories of teenage years. His youngest son features very heavily in the stories, as he was a constant feature whilst the book was being written, especially as he left a perfectly good job to join the circus.
You'll laugh, you'll cry, you'll wish you never grew up and certainly wonder why you ever had children.