The Joker pulls off a string of key-related pranks throughout Gotham City, then with his magic box, proceeds to snatch a priceless jeweled key right under the noses of Batman and Robin. The Dynamic Duo wise up to his ways and thwart him at their next encounter. However, the Joker has more devious plans to do away with them both before his final caper. Written by
Did You Know?
The title is parody of the term "practical joker" who a person who sets up physical pranks at the expense of a target. See more
The bat pole signs "Bruce" and "Dick" are missing from the Batpoles in this episode. See more
Have you a last word for posterity?
Only this, Joker: Evil sometimes triumphs temporarily, but never conquers!
If I have time, Batman, I'll see that that is properly engraved on your tombstone.
References The Green Hornet