It's Only a Paper World is an episode of Pinky and the Brain.
Plot[]
The Brain's newest scheme to take over the world involves creating a new earth (Fake) known as Chia Earth and use it fool the citizens into thinking it's a real earth, and leaving them on it so Pinky and the Brain can have the actual earth. In a twist of irony, a meteor destroys the original Earth, forcing Pinky and the Brain to retreat to the fake Earth.