Lisa becomes a crossword puzzle master and Homer bets money on her competitions to make up for revenue lost from his couples' break-up company.

!! Tropes:

* BigNo: Homer's response to Lisa changing her last name to "Bouvier."
* BigYes: Homer's response to buying band candy.
* ComicallySmallBribe: When Bart and Lisa's lemonade stand is about to be shut down for not having a proper license, Bart drops some cents to bribe the inspector. It obviously fails.
* ContrivedCoincidence: Homer, Marge, Bart and Maggie have shirts with the letters to spell Lisa's name and accidentally spell "Ilsa" when Lisa is playing against a rival who goes by that name.
* CreepyChild: "No...I'm not mad."
* EveryoneHasStandards: Homer finds the bartender quite judgmental for taking semi illegal bets when he shames him for taking a bet against his daughter.
* NomDeMom: When Homer bets against Lisa, it hurts her feelings to the point she decides to use her mother's maiden name out of hatred to him.
* ThrowTheDogABone: A very rare instance with Gil actually succeeding at something, at the cost of him looking like a {{Jerkass}} to a child like Lisa.
* YoureNotMyFather: When Lisa found out that Homer betted against her, she disowns him. Unlike in "Lisa's Pony" and "The Dad Who Knew Too Little", where she was just angry but eventually forgives Homer, she takes her mother's surname to show that she officially hates him on par with her aunts.