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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 : Feb 15, 2026
Episode : 801 Episode
Season : 37 Season
Runtime: 26:14 minutes
Studio: FOX
Country: United States of America
