Best known for his books chronicling the adventures of "Captain Underpants," Dav Pilkey has built a reputation as one of his generation's most inventive writers and illustrators. Yet as a young boy, he seemed unlikely to ever become a success. Suffering from attention-deficit/hyperactivity disorder, or ADHD, this one-time "class clown" was sent out from class to sit in the hallway so often that he had his own desk waiting for him, which he kept stocked with paper, pencils, and crayons. There, he could allow his imagination to go to work, drawing comic books to entertain his friends and creating characters that would later become some of the most popular in contemporary children's literature. Find out how Pilkey overcame his difficult childhood to become one of America's most beloved young-adult authors.