The Grim Adventures of Billy and Mandy· Season 4 · Episode 18
Puddle Jumping
When Billy jumps into a supernatural puddle (a Cosmic Sinkhole, according to Grim), it takes him to the home of Granny Applecheeks, who wants to bake him into a pie. It is up to Mandy and Grim to save him if the puddle can take them to the right place.
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