WhoBob WhatPants? (SpongeBob SquarePants)

After being called a nuisance by all his friends, SpongeBob SquarePants vows to leave Bikini Bottom forever. Along his way, he falls and bumps his head. Suddenly he can't remember anything, not even his own name! He stumbles into New Kelp City, overthrows a ruthless gang of anti-bubble-blowing thugs, and is elected mayor!