Download or read book DC Super Heroes Knock-Knock Jokes written by Michael Dahl and published by Capstone. This book was released on 2018 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knock knock Who's there? Robin. Robin who? Robbing is for criminals - not super heroes With 75+ KNOCK-KNOCK jokes featuring Batman, Superman, and Wonder Woman, this official DC Comics joke book will have readers coming back for more Full-color art and enhanced back matter make this a perfect fit for fanboys and fangirls alike.