Abbott and Costello Comics #29

When Bud Abbott bets Lou Costello ten dollars he can't stay quiet for half an hour, Lou accepts the challenge—but his silence leads to a case of mistaken identity at a circus stunt, where he gets mixed up with a dummy scheduled to be dropped from a skyscraper. What follows is a wild scramble involving movers, a professor, and increasingly frantic attempts to sort out who's the real performer and who's the prop before it's too late.

Bud Abbott hatches a scheme to make Lou Costello the romantic hero of the dude ranch—complete with cowboy gear and a grand plan to woo the wealthy heiress Cecily Simpkins—but Lou's bumbling trail of disasters only seems to sweep her further off her feet. When a case of mistaken identity lands Abbott himself at the altar instead, he's forced to make a desperate escape on horseback, leading to one wild, unstoppable ride straight into the wedding chapel where Lou is waiting as best man.

When Bud Abbott and Lou Costello spot a boy playing with a yo-yo on the street, they can't resist mocking him—until Lou realizes he's been carrying one around himself the whole time. It's a quick-witted bit of comic comeuppance that captures the pair's gift for turning the joke on each other.