New York Times bestselling author Dav Pilkeys Captain Underpants soars to greater heights with the breakthrough fourth book--now in full color! George and Harold are fourth-grade buddies with a penchant for practical jokes. When the boys latest prank drives their science teacher over the edge their clueless principal Mr. Krupp quickly hires a replacement: Professor Pippy P. Poopypants. Of course George and Harold cant resist making fun of the Professors silly name. But then the Professor retaliates by forcing everyone in town to change their own names to be equally silly with colossal consequences!
