SpongeBob SquarePants Season 5 Episode 16

Pest of the West: While researching his family tree SpongeBob discovers that he was related to the great Western hero, and famous chili-slinger, SpongeBuck. The tale of his ancestor's fame begins in the town of Dead Eye Gulch, which used to be called Bikini Gulch before the no-good Dead Eye Plankton came along.