The Grim Adventures of Billy and Mandy: "Billy's Growth Spurt"
The Grim Adventures of Billy and Mandy Season 1 Episode 18
The Grim Adventures of Billy and Mandy: "Billy's Growth Spurt" Season 1 · Episode 18
The Grim Adventures of Billy and Mandy Season 1 Episode 18
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Billy's Growth Spurt
Billy eats too much junk food that makes him feel sick. Grim prepares him a remedy using his granny's recipe, but this medicine makes a parasite to start growing in Billy's back, which Billy names Yap-yap. In the following, Billy and Yap-yap continue eating junk food, so Mandy suggest to use the antidote to the original remedy. Eventually, Yap-yap, now looking like a smaller version of Billy, detaches himself from Billy (which would have technically cured Billy without the need of him drinking the anitdote), and tries to escape from the antidote. In the end, Yap-yap drinks the antidote and is destroyed.
TV Show: The Grim Adventures of Billy and Mandy
Country: United States, South Korea, Japan
Actors: Greg Eagles, Richard Steven Horvitz, Grey DeLisle
Production: cartoon network studios