Nickelodeon slashed the budget for season 4, forcing the creators to make a clip show episode.
This episode was created because Nickelodeon slashed the budget of the season by around the amount required for one episode. The creators of the show could either fire the crew early and have one episode less, or keep them on and make a clip show with minimal animation. They didn't feel it was right for them to fire everyone early so they made this clip show episode. One of the creators even apologised ahead of its release because they knew the episode wouldn't be very good.
Lowest-rated episode of the entire series.