Dr. Knucklehead is knock-knocking at the door with fun in mind. Children will happily answer the call, because they just love knock-knocks more than any other form of humour. Kids will have a laugh riot repeating these gags. Try this: Knock Knock. Who's there? Daisies. Daisies who? Days he's a man, but by night, he's a werewolf! Or laugh a lot at this: Knock Knock. Who's there? Billows. Billows who? Bill owes me ten bucks and he said you'd give it to me. Each one is hilarious!

 

There are 96 pages in this book. This book was published 2007 by Sterling Juvenile .