Description by couchtuner for The Simpsons Season 12 Episode 9 : An x-ray reveals that Homer has a crayon lodged in his brain that has been there since childhood. Upon removal of the crayon, Homer’s IQ suddenly jumps to a very high level; he and Lisa form a great new bond, but when his way of life changes drastically he wonders if removing the crayon was a good idea.
Watch It Here : The Simpsons Season 12 Episode 9 HOMR