The Simpsons - Season 18 Episode 17

Marge becomes a spectacle during a PTA meeting for not having an e-mail address, and she decides to take a chance on using the Internet. Amazed and delighted by all the Internet has to offer, Marge decides to join a popular role-playing fantasy game named "Earthland Realms." To Marge's dismay, the game has her interacting with practically the whole town of Springfield, including Bart, who happens to be the game's most feared and destructive player. Meanwhile, Homer saves Lisa's soccer game from cancellation after he volunteers to take the place of a referee who recently quit. However, Homer's refereeing skills only exasperate Lisa, and her competitive streak gets the best of her.