Ever since Jon Scieszka and Lane Smith turned the villainous wolf into the unreliable narrator in The True Story of the Three Little Pigs, the author-illustrator team has been a favorite of 6-year-olds and college sophomores alike. Their latest oddball picture book is a series of laconic, ultrashort stories about best friends with divergent cultural backgrounds who agree on nothing: baked beans, knock-knock jokes, even — as in the two-sentence story that goes “Beautiful day” … “No it isn’t” — the weather.