Bionic boogers return in the seventh book in this #1 New York Times bestselling series by Dav Pilkey, the author and illustrator of Dog Man! George and Harold thought they were beyond boogers. Their new pet, Sulu the Bionic Hamster, had defeated the Bionic Booger Boy, and through the wonders of science, Melvin Sneedly had been brought back to normal (well, almost normal). It looked like their last adventure was actually going to have a happy ending... except for one thing (well, three things) -- ...