7 Season
184 Episode
The Grim Adventures of Billy and Mandy - Season 2 Episode 16 Smarten Up!
Billy is worried about failing an upcoming Math test, so Grim gives him a "bookworm", which will make him much smarter. Milkshakes, Billy's cat, eats the worm instead, and is forced to tutor Billy. Billy is still an idiot in the end.
- Year: 2007
- Country: United States of America
- Genre: Animation, Comedy, Kids
- Studio: Cartoon Network
- Keyword: grim reaper, spin off
- Director: Maxwell Atoms
- Cast: Greg Eagles, Richard Steven Horvitz, Grey DeLisle, Vanessa Marshall