The Simpsons
S12E09 HOMЯ
In an effort to recover his family's lost savings from a poor investment, Homer takes part in a research study as a human test subject. During this experience, he uncovers the surprising reason behind his low intelligence: a crayon that has been stuck in his brain since childhood. Determined to boost his IQ, he opts for its removal, only to find that higher intelligence doesn’t automatically bring him happiness.
Season 12 Episodes
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Treehouse of Horror XI
A Tale of Two Springfields
Insane Clown Poppy
Lisa the Tree Hugger
Homer vs. Dignity
The Computer Wore Menace Shoes
The Great Money Caper
Skinner's Sense of Snow
HOMЯ
Pokey Mom
Worst Episode Ever
Tennis the Menace
Day of the Jackanapes
New Kids on the Blecch
Hungry Hungry Homer
Bye Bye Nerdy
Simpson Safari
Trilogy of Error
I'm Goin' to Praiseland
Children of a Lesser Clod
Simpsons Tall Tales