by Penny Dolan (Author). Bippo and Boppo are new circus clowns, but their jokes aren’t making people laugh. But when they stay up all night thinking up better jokes, they’re so tired they almost miss the show next day… A vivid, comical circus story to boost enthusiasm and literacy, told in short, simple sentences combining new and familiar words. Suitable for readers at Blue Band 4 of the Book Bands for Guided Reading.