George and Harold's latest prank backfires in the second book in this
#1 New York Times bestselling series by Dav Pilkey, the author and
illustrator of Dog Man!
George and Harold are usually responsible kids -- whenever anything bad
happens, George and Harold are usually responsible! This time, they
accidentally invent an army of terrifying talking toilets. Luckily, they
know a superhero with enough snap in his waistband to save the day! This
looks like another job for the amazing Captain Underpants!