text: Controversial episodes "Dial M for Monkey: Barbequor", a season 1 episode from 1996, was removed from rotation after being broadcast in the United States. In later broadcasts and on its Season 1 DVD (Region 1), "Barbequor" has been replaced with "Dexter's Lab: A Story", an episode from season two.
  "Rude Removal", a season 2 episode, was produced but not aired. It involves Dexter creating a "rude removal system" to diminish Dee Dee and Dexter's rudeness; however, it instead creates highly rude clones of both siblings. "Rude Removal" was only shown during certain animation festivals and was never aired on television due to characters swearing, even though all swear words are censored. Tartakovsky commented that "standards didn't like it." Linda Simensky, then-vice president of original programming for Cartoon Network, said "I still think it's very funny. It probably would air better late at night." Michelle Klein-Häss of Animation World Network called the episode "hilarious" after viewing it at the 1998 World Animation Celebration, although she predicted that it would "never be shown on television".
  In October 2012, Genndy Tartakovsky was asked about "Rude Removal" during an AMA on Reddit, and he replied "Next time I do a public appearance I'll bring it with me!" Adult Swim later asked fans on Twitter if interest still existed with it, and fan response was "overwhelming". "Rude Removal" was finally uploaded on Adult Swim's official YouTube account on January 22, 2013.