The Marvelous Misadventures of Flapjack (2008)
S1E15 Sittin' Muscle
Flapjack, Captain K'nuckles, and Bubbie set off on an adventure to the Bottom of the World to retrieve K'nuckles' forgotten "sittin' muscle," which refers to his backside.
Flapjack, Captain K'nuckles, and Bubbie set off on an adventure to the Bottom of the World to retrieve K'nuckles' forgotten "sittin' muscle," which refers to his backside.