The Great Snail Race / Mid-Life Crustacean - S3-E15
Corrected entry: When Mr. Krabs comes upon an elderly person, the old man tells him to wait in line like everybody else, and then Mr. Krabs sees a bunch of elderly people waiting in line in front of a cemetery. Seconds later a man handing out ice cream to the elderly people suddenly appears in front of the entrance.
Correction: That's because Mr. Krabs was hallucinating the cemetery.