Tra-la-laaa!! The New York Times and USA Today bestselling Captain Underpants series is now available in ebook edition, featuring Flip-E-Rama, bonus content, and more! George and Harold are usually RESPONSIBLE kids...whenever anything bad happens, George and Harold are usually responsible! And it looks like they're up to their old tricks again! First, they ruined the school's science fair with a series of silly pranks. Then, they accidentally created an army of evil, vicious, talking toilets, intent on taking over the world. Who will stop the carnivorous commodes?!!? This looks like a job for Captain Underpants!