Rabbit, Not Rabbot (S11E06)

Master Shake makes a grand comeback to his modest home, boasting a new deep voice and dragging along an unconscious rabbit. The twist unfolds when they discover that Shake and the rabbit have switched bodies in a Freaky Friday manner. To rectify this bizarre situation, Frylock, Meatwad, and Carl devise a plan that involves public urination at the nearby Powerpuff Mall.