Knocking At Castle Door In Medieval Obidos-portugal by Ruth Hager. purchase print: https://fineartamerica.com/featured/knocking-at-castle-door-in-medieval-obidos-portugal-ruth-hager.htmlIt’s been more than six years since we created SFF knock-knock jokes, so let’s try it again!

Create and share your own (must be original) SFF-inspired knock-knock joke.

The one that makes us laugh the hardest (or groan the most) wins a book from our stacks.

Here is a groan-worthy joke from our previous contest:

Knock knock.
Who’s there?
Ron.
Ron who?
Ron away! The spiders are coming!