The Krusty Plate SpongeBob SquarePants : Season 5 Episode 20

During an evening of washing dishes at the Krusty Krab, SpongeBob cannot remove a spot from a dinner plate. He attempts to use various methods, to the point of destroying the restaurant. In the end, SpongeBob succeeds to clean the plate, but destroys the Krusty Krab in the process from a nuclear explosion.