SpongeBob's Big Birthday Blowout (SpongeBob SquarePants)

SpongeBob's Big Birthday Blowout is the thirteenth and fourteenth episode of the twentieth season of SpongeBob SquarePants, and serves as the show's 20th anniversary special. In this episode, SpongeBob and Patrick tour the surface world, while the rest of Bikini Bottom prepares a surprise party for SpongeBob.