Elmo, Ernie, and their Sesame Street friends will make little ones giggle, grin, and guffaw as they tell a series of silly elephant, fish, and knock-knock jokes. Visual humor and verbal puns will have even grown-ups laughing til it hurts at this collection of kooky knock-knocks and jokes about everybody's favorite funny animal. Many of the knock-knock jokes are SesameStreet specific and were written especially for this board book. This is one that toddlers will want to come back toâ??again and again and again!