Episode name reference to/pun on: The astronomical term "Dark side of the Moon".
January 18, 2002
The Mock Side of the Moon is the third part of the 4th episode in season 3 of Dexter's Laboratory, which first aired on January 18, 2002. In this episode, Dexter goes to the moon to find an alien race talking about something. Thinking they're going to attack Earth, Dexter tries to destroy the aliens, only for the leader to tell him that they need sweaters.