The Marvelous Misadventures of Flapjack (2008)

S1E29 Sea Legs (Too Big for His Britches)

When Flapjack discovers a pair of legs floating in the ocean, Captain K'nuckles seizes the opportunity to frighten the residents of Stormalong Harbor by using them. But chaos erupts when a sea monster's torso arrives to reclaim its lost legs, sparking a fierce struggle for possession.