Billy is worried about failing an upcoming Math test, so Grim gives him a "bookworm", which will make him much smarter. However, Milkshakes, Billy's cat, eats the worm instead, and is forced to tutor Billy. In the end, Billy is still an idiot.
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The Grim Adventures of Billy and Mandy - 2x16 Smarten Up!
- Poor
- Nothing special
- Worth watching
- Pretty cool
- Awesome
- Aired Jul 18, 2003
- Episode 2x16
- Show special No
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