Chum is Fum! is a slogan created by Patrick in order to bring customers to the Chum Bucket. Plankton used it as the Chum Bucket's official slogan. It appeared in the episode Chum Bucket Supreme and can be seen in the background in SpongeBob's Last Stand during Give Jellyfish Fields a Chance. It attracted large crowds to the Chum Bucket, and when the crowd became bored of the slogan, Plankton changed it to Fum is Chum.
- Before Patrick came up with the slogan, the slogan used was Plankton's "Chum is Metabolic Fuel!"