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.
Genres: Animation , Comedy , Family
Keywords: adult-animation , adult-humor , cartoon , dysfunctional-family , family , hilarious , irreverent , kids , middle-class , nuclear-power-plant , parody , satire , school , sitcom , social-satire , latest-episodes , watch-series-online , farce