SpongeBob SquarePants - Season 5 Episode 9

Mr. Krabs organizes a work contest for SpongeBob and Squidward that involves naming all the customers at the Krusty Krab. He shows them a brochure for a cruise vacation as a prize. After efforts from his two employees, Mr. Krabs did not tally the scores, but tells them that to know the last customer's name will decide who will win. Squidward then asks the fish his name but the fish has a name that sounds alike to "What's it to ya?" So Squidward steals the customer's wallet to look at the driver's license. Squidward gets arrested. In jail, he gets the prize from Mr. Krabs only to find that the cruise that the brochure offers has long been expired and that the prize is just the brochure.