The Grim Adventures of Billy and Mandy
The Grim Adventures of Billy and Mandy
Billy's Growth Spurt #S01E18
Billy's Growth Spurt
The Grim Adventures of Billy and Mandy · Season 1, Episode 18
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.
Episode 18 of Season 1 from The Grim Adventures of Billy and Mandy — available to stream in HD on any device.
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