- During Seasons 2-5, they spin around while swimming from the shop, but in Season 1, they don't spin.
- In Season 1, they swim to their right, but they swim to their left in Season 2.
- In Season 2, they have lunch in the classroom and the location is imagined from a bubble which shows when Gil or Molly says, "It's time for Bubble Guppies."
- In Seasons 2-5, Nonny tells all the lunch jokes.
- Molly is the only bubble guppy to not make a lunch joke.
- Season 1 is the only season where Nonny doesn't appear in every lunch joke, except for the season 5 premiere.
- The location of the lunch joke is different in every episode and is based on the theme of the episode.
- Certain "story" episodes, such as the first few episodes of Season 5, incorporate the lunch joke into the narrative.
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