Who"s that knocking on the door? Sounds like something"s fun out there. Knock-Knock. Who"s there? Account. Account who? Account named Dracula. Nothing beats a good knock-knock for a giggle, a guffaw, a chuckle, and a chortle. Kids would happily tell them forever. Fortunately, there"s plenty here to keep them going, with hundreds of hilarious choices enhanced with cartoon-like illustrations. Knock-Knock. Who"s there? Itch. Itch who? Gesundheit! Or how about this for a hearty laugh: Knock-Knock. Who"s there? Zinc. Zinc who? Zinc I was really out of knock-knock jokes? Not with this collection at hand!