• This episode was premiered in Latin America on March 21 before the U.S.
  • The episode's title is a play on the song Happy Birthday.
  • This is the second episode that involves a birthday party. The first was Operation: Happy Birthday.
  • This is the second time that The Chief hates parties and gatherings. The first time was in Dog House.
  • The video game Dudley plays is a parody of Pac-Man.
  • The Chief is playing Solitaire on his computer.
  • This is the first time an episode ends with one of the characters singing a song of public domain.
  • Dudley once broke the fourth wall when he told Kitty that the plot was complicated.
  • This is the first time Dudley is seen as a child. At that time, Dudley was present in a school play based on The Discovery of America in 1492, and he had the role of Christopher Columbus.
  • It is shown (according to the calender) that Dudley's birthday is on May 11th, and on that occasion, falls Thursday.
  • Duck E. Cheese is the second parody of Chuck E. Cheese's. The first being Pete-Za Possum Party Palace.
  • This is the first time that Dudley is seen as a kid on video.
  • Despite Dudley having a birthday party, the only people who showed up were Kitty, The Chief, Keswick, and some T.U.F.F. agents. No one he knew outside of T.U.F.F. showed up at the party.

Running Gags

  • Objects (usually blimps) announcing Dudley's birthday.
  • Dudley mentions that he wants a jet ski for his birthday.

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