Knock Knock. Who's there? Isabel. Isabel who? Isabel necessary on a bicycle? Knock Knock Who's there? Scott Scott who? Scott nothing to do with you. You'll find loads more knock knock jokes inside-all in this handy sized little book. Whether you're called Anna or Wesley, you can find jokes in here to keep you and all your friends laughing for days. When you need a few knock knock jokes, this is the book for you!