Doctor Proctor's Fart Powder is a hilarious and entertaining book written by Jo Nesbo. This book tells the story of Doctor Proctor and his invention of a special powder that can make people fart. With its unique and funny premise, this book is sure to keep readers of all ages laughing. Available in both paperback and eBook formats, Doctor Proctor's Fart Powder is a must-read for anyone looking for a lighthearted and enjoyable read.