Knock Out is an episode of SpongeBob SquarePants. SpongeBob fails his night boating test again and he crashes into Goo Lagoon. Mrs. Puff says SpongeBob cannot resume boating school until he learns to swim. But Larry even thinks SpongeBob is unteachable. When the law finds out Mrs. Puff let SpongeBob go for no reason, they arrest her. That night, SpongeBob recieves a call from Puff saying that she'll let him back in her class.