The SpongeBob Christmas special is called "Christmas Who?" It first aired on December 6, 2000, and is the second episode of the third season of SpongeBob SquarePants. In the episode, SpongeBob and his friends try to figure out who is responsible for Christmas, but they all come up with different answers. Eventually, they realize that Christmas is a time for giving and sharing, and they decide to throw a party for everyone in Bikini Bottom.