List of episodes " Penny Foolish " is a SpongeBob SquarePants episode from season 6. In this episode, Mr. Krabs becomes obsessed over a penny SpongeBob found.. Mr. Krabs becomes obsessed when he thinks that SpongeBob has found a penny; SpongeBob tries to memorize the history of boating in one night.
Penny is a penny (Obviously), and one of SpongeBob 's three new friends in the episode I Had an Accident. When Sandy and Patrick were getting creamed by a Gorilla, Chip, Penny, and Used Napkin together convinced SpongeBob to step outdoors to save his friends.. Penny is a penny that appears in the episodes "I Had an Accident" and "Lighthouse Louie." It is a bronze-brown penny with the image of a fish caricature of Abraham Lincoln on it. SpongeBob says that Penny can sing. Patrick thinks Penny has the most beautiful singing voice. Penny becomes one of SpongeBob's best indoor friends along with Chip and Used Napkin after the latter decides to stay.