Mermaidman Begins
S8, E121: SpongeBob and Patrick are visiting the cave of their superheroes and idols, Mermaid Man and the Barnacle Boy. When they begin to tell the tale of how it all began, the two friends can hardly believe how lucky they are.

S8, E121: SpongeBob and Patrick are visiting the cave of their superheroes and idols, Mermaid Man and the Barnacle Boy. When they begin to tell the tale of how it all began, the two friends can hardly believe how lucky they are.