Trixie appears to have changed her opinion on comedy as she previously considered it "the second-lowest form of entertainment" in "Movie Magic".
This is the first time Veronica is seen in her underwear. She is not seen in this episode again probably due to embarrassment and she probably doesn't want to get caught in her underwear in public again.
Little Shop of Horrors - The entire episode is a parody of the movie, making Timmy looks like Seymour and Trixie like Audrey. Also the "Seemingly Harmless Plant" is similar to Audrey II.
Super Mario Bros. - The "Seemingly Harmless Plant" acts and look similar to Petey Piranha, also it looks similar to the Piranha Plants.
Class Clown- The meaning of the episode is, where someone laughs and makes other people laugh, and gets in a lot of trouble
Timmy never realizing the obvious problem even when they say its "seemingly" noticeable.
People laughing when Timmy gets their attention while the wish is in effect.
In this episode, Wanda suffocates along with Timmy on the airless planet while Cosmo doesn't due to him having no lungs. However in "Channel Chasers", Cosmo stated that fairies don't need oxygen to breathe because they are magical. This is also proven in "Transparents!".
Timmy refers to Trixie's dad as Mr. Trixie, despite the fact that Timmy should have said Mr. Tang. Also, Timmy could have panicked and/or could have been in a hurry to save her.