Arthur and his classmates are shocked when Mr. Ratburn reveals that he's getting married. They worry, however, when it seems his fiancé is a Control Freak named Patty, and scheme to make Mr. Ratburn fall in love with someone else.
Tropes for this episode include:
- An Aesop: Don't jump to the worst possible scenario without getting details first.
- Aesop Amnesia: The kids have forgotten the past few times they've seen Mr. Ratburn have a life outside school. Heck, he stayed at Arthur's house for a few days when his roof collapsed.
- Brick Joke: When Muffy shows off an app on her phone that turns people into New Age Retro Hippies with a picture of Buster, Buster takes a liking to how the app makes him look. He later wears the exact same outfit to Mr. Ratburn's wedding.
- The Bus Came Back: Ms. Rodentia Ratburn, from "Arthur's Substitute Teacher Trouble," appears at the front of the wedding aisle sobbing Tears of Joy. This is the first time she has appeared in over twenty years.
- Call-Back: Muffy had previously written a letter with terrible grammar in "Francine Goes to War."
- Chekhov's Gunman: The chocolatier who gives Francine and Arthur free samples ends up being Mr. Ratburn's fiancé and then his husband.
- Cool Big Sis: For all her Control Freak tendencies, Patty ultimately just wants what's best for her brother and his fiancé and wants the wedding to be perfect for them. She promises to do the same thing for her sister, Rodentia.
- FauxHorrific: At the end of the episode, Francine says there is one thing teachers should never do. She then points to Mr. Ratburn and Patrick dancing like dorks.
- Gasp!: The kids do this twice; once when Mr. Ratburn announce he's getting married, and second when they see him and Patty talking.
- It's All About Me: At first, the kids decide to stop the wedding because they're worried that Patty will make Mr. Ratburn tougher, which means more schoolwork.
- New-Age Retro Hippie: Muffy has an app that turns people into this.
- Not What It Looks Like: Patty makes her appearance micromanaging Mr. Ratburn's wedding and berating the Sugar Bowl wait staff. The kids fear that she's his fiancee and will "toughen" Mr. Ratburn up. It later turns out that Patty is Mr. Ratburn's sister and is the one helping him plan his wedding and ends up officiating it as well.
- One Steve Limit: There is a Patty and a Patrick; Patty is Mr. Ratburn's older sister and Patrick is his fiance.
- O.O.C. Is Serious Business: Mr. Ratburn is normally a Stern Teacher. He actually picks up his phone when it rings loudly in class, right when he's about to administer a pop quiz. Understandably, the kids are shocked. After he's done with his phone conversation, Mr. Ratburn apologizes for taking the call. He reveals to his students that he's getting married.
- Relative Error: The kids initially assume that Patty is Mr. Ratburn's fiancé, but it later turns out that Patty is his older sister and that she was Mr. Ratburn's wedding planner/officiator.
- The Reveal: Mr. Ratburn is revealed to be gay.
- Shout-Out: Mr. Ratburn has a book of love poems by Pablo Neruda.
- Sucks at Dancing: Mr. Ratburn and his new husband, Patrick, have this in common at the end of the episode. Francine lampshades that teachers should never do that.
- This Explains So Much: The kids have this reaction when they discover that Patty is Mr. Ratburn's sister and not his fiancé.
- Wham Shot: When the kids learn that Patty is Mr. Ratburn's older sister, they wonder who Mr. Ratburn is marrying. Cue Patrick and Nigel walking down the aisle together.
- You Make Me Sic: Muffy's love poem to Ms. Turner, a librarian, is loaded with spelling mistakes and bad grammar. Ms. Turner simply hands it back to her with the mistakes marked and a book on how to write poetry.
Arthur and Buster fight over a video game, and have "teams" backing them up. Even after Arthur and Buster get over the argument, everyone else wants to be mad anyways.
Tropes for this episode include:
- Call-Back: Just like in "The Squirrels," Binky is late to a class-wide panic.
- Feud Episode: This is expected from the title of the episode.
- I Lied: There was no snow castle-building contest judged by the mayor.
- "Rashomon"-Style: Arthur claims that Buster unplugged the console on purpose, while Buster thinks Arthur intentionally froze the game.