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While working as a human guinea pig (to pay off the family's lost savings after making a bad investment), Homer discovers the root cause of his subnormal intelligence: a crayon that was lodged in his brain ever since he was a boy. He decides to have it removed to increase his IQ, but discovers that being smart does not necessarily equal being happy.
First Air Date : Dec 17, 1989
Last Air date : May 05, 2024
Episode : 769 Episode
Season : 36 Season
Runtime: 22:14 minutes
Studio: FOX
Country: United States of America
