After a visit to the planet of seemingly harmless plants to get a flower for Trixie, Timmy discovers that Trixie will date anyone who is funny. Timmy wishes that he was the funniest man on Earth and soon, he can make anyone bust a gut just by talking to them. Timmy finally gets Trixie's attention long enough to give her the flower and ask her out. Unfortunately the plant is actually an alien monster that represents Audrey 2 from Little Shop of Horrors.Timmy goes to Trixie's mansion for their date, but she thinks he's joking due to the wish and won't let him in. Later Timmy learns about the plant from Cosmo who says the Plant will eat Trixies heart out at midnight. Timmy tries to wish the plant away but Cosmo and Wanda won't take him seriously because he's so funny. Timmy tricks them into going to fairy world by offering to share his funny with the rest of fairy world. Once there, Timmy wishes he wasn't funny anymore. He goes to Trixie's house armed with garden tools to kill the plant.(Why he didn't simply wish it away is unknown.)
The plant sprays Trixie with knock out gas before she see's it. Timmy rushes into trixies room to discover that the plant has grown to gigantic size. After a brawl with the plant that nearly destroys Trixie's room, the plant attempts to eat Timmy but he sprays it in the trap with plant kill gas which suffocates it long enough for Timmy to grab his hedge clippers and cut its stem thus killing it. Trixie wakes up in Timmy's arms confused, and when she sees that he killed her plant, she dumps him and kicks him out the window. Cosmo tries to cheer Timmy up by taking them to a the planet with almost enough oxygen but Timmy and Wanda suffocate while Cosmo, somehow still breathing, ponders what air is.
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