After Martin scoffs at Frasier and Niles for their inability to fix the most basic household appliance -- the toilet -- the brothers set out to explore this uncharted territory. Despite their best intentions, however, Frasier and Niles are unable to master the wizardry of mechanics and have to call a plumber.

In a strange twist of fate, the Cranes discover that the plumbers they’ve hired are the Kriezel brothers, Danny and Billy, who used to torture them in junior high school. Though Niles angrily yet successfully confronts his old nemesis, Frasier claims he wants to remain calm, according to the rules of professional psychiatry.

As the elder Kriezel brother continues mocking the boy he used to torment, Frasier finally abandons his “adult” approach and exacts the greatest revenge of all: he dunks the bully’s head in the toilet bowl.