A homage to the day of true humor. You must watch all the way through.
When Batman (West) and Robin (Ward) get a tip that Commodore Schmidlapp (the final role of actor Reginald Denny) is in danger aboard his yacht, they launch a rescue mission using the Batcopter. After a tangle with an exploding shark, Batman and Robin head back to Commissioner Gordon’s office where, through deduction and wisdom, they figure out that the tip was a set-up by four of the most powerful villains ever (Joker, Penguin, Riddler and Catwoman), who have united to defeat The Dynamic Duo once and for all. (source:Wikipedia)