S9E17: Lisa the Simpson

In "Simpsonlar - S9E17: Lisa the Simpson," Lisa fears that the "Simpson gene" will doom her to a life of mediocrity. Convinced her intelligence is declining, she turns to Grampa, who confirms her fears with a family history of failures. The rest of the family, predictably supportive in their own chaotic way, tries to reassure her, but Lisa remains concerned about her future. The plot takes a turn when Lisa's school project, a cryptogram, is solved by her baby sister Maggie. This sparks hope, and Lisa brings several female relatives to prove they have retained their intelligence despite the "Simpson gene." It turns out that while the male Simpsons tend to be less than bright, the female members are unaffected. Reassured that she won't be a victim of the gene, Lisa regains her confidence. Meanwhile, Homer embraces his own limitations with a newfound sense of pride. The episode ends with Homer leading the Simpson men in a joyful celebration of their mediocrity, while Lisa looks on with relief and optimism about her own prospects.