A new Dad Joke I wrote last night:

Sherlock Holmes and Dr. Watson are at home at 221B Baker Street.

Holmes says, "A puzzle for you, Watson. When is a game not a game?"

Watson thinks for a moment and replies, "I'm confounded, Holmes. When *is* a game not a game?"

Holmes says, "Elementary, my dear Watson. When the game is afoot!"

YouTube video version: