• The episode's title is a pun on the phrase "tough cookie", which is another term for a persistent person.
  • This episode aired on Nickelodeon Latin America and Nickelodeon Brazil before airing on the U.S.
  • It is revealed that Kitty has a commercial for a toaster pastry brand, Keswick has a commercial for an energy drink, and The Chief has a commercial of anti-fleas (he thought it was body spray).
  • Carp Tarts is a parody of the toaster pastry brand Pop Tarts.
  • Spraid (the product that The Chief promotes) is a parody of the insecticide Raid.
  • When Dudley drinks Keswick's energy drink, his expressions parodies anime style, and it even sounded like background music, a kind of Japanese electronic music.
  • Kitty's publicity boss is identical to the TV network president from Lucky Duck, although he may have given up his old job after what really happened in that episode.
  • This is the first time someone sees another through a window (in this case is Dudley who sees his neighbor).
  • This is the last episode of Season 2 in production order.

Running Gags

  • Dudley not being able to say "vegetables".


  • In this episode Dudley vomits when he says vegetables. However, in Kid Stuff, Dudley said vegetables without any problems.
  • In the end credits Bird Brain's name is shown, who doesn't appear in this episode.

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