While sorting through parts from their old inventions, Phineas and Ferb decide to make an entirely new invention out of these parts. Meanwhile, Linda is sleep-deprived from baking several pies for a charity event, and Lawrence is preparing a speech about a platypus-worshipping tribe called the Ornithorican Tribe. At the same time, after receiving multiple royalty checks for a device that corrects eyesight, Dr. Doofenshmirtz decides to build a device called the Eye Fog-Inator, which will fog people's eyes, in order to counteract the thought of his inventions doing good (and to force more people to use his eye correction device).
Tropes:
- Animate Inanimate Object: During Linda's hallucinations, a bread bag dances and three pies sing.
- As Himself: Internet sensation Parry Gripp, who also helped co-write the titular song.
- Birthday Episode: For Major Monogram.
- Borrowed Catchphrase: After Perry disappears from Linda, presumably to get away from all the burnt pies she's been feeding him, Linda wonders where Perry is.Internet Sensation Parry Gripp: Right here!
Linda: Platypus.
Internet Sensation Parry Gripp: Oops. Sorry. Didn't mean to intrude. - Creator Cameo: Two guys that look and sound suspiciously like Dan Povenmire and Jeff "Swampy" Marsh attend Lawrence's speech and comment on his arm being in a sling.
- Cut Lex Luthor a Check: Heinz Doofenshmirtz receive royalties for inventing a device that corrects people's eyesight, but he still wants to use the device for evil.
- Given Name Reveal: The "Ballpit Kid" (the boy wearing green who was saved from the ballpit in "No More Bunny Business") is given an actual name thanks to a throwaway line by his father: "Ignore the upside-down man, Balthazar."
- Hallucinations: Linda has these due to Sleep Deprivation.
- Happy Birthday to You!: O.W.C.A. can't afford the song for Monogram's birthday, so the agents "sing" a cacophony of animal noises.
- Hope Spot: Candace is close to an epic bust after hearing Linda saw the Big Idea, but she gets hit by the Eye Fog-inator's stray blast while running through the gate and cannot see it clearly, prompting Linda to go inside to rest.
- Impairment Shot: Anyone who is zapped by the Eye Fog-inator has this.
- Noodle Incident: Unusual for a show heavily reliant on Continuity Nods, many of the projects mentioned by the gang come off as these. For example, Baljeet uses some slide rulers from a "World of Calculation" exhibit, Isabella uses some coat hangers from the "Leaning Tower of Closet Space", and Buford uses catering trays from the giant picnic and a parachute from the drag race. (Though it should be noted that the gang would later have a giant picnic in "It's No Picnic".
- One-Steve Limit: Internet sensation Parry Gripp makes several appearances whenever someone mentions "Perry".Ferb: Well, he's no platypus, but he's still a lovely fellow.
- Patter Song: "Backyard Hodge Podge" qualifies as one of these.
- Royalties Heir: Heinz Doofenshmirtz invented a device that corrects people's eyesight and the royalty checks he receives for this make him feel less uncomfortable about one of his inventions being used to do good.
- Punctuated! For! Emphasis!: Candace replies, "I...don't...see...anything!" as she is hit by Doofenshmirtz's Eye Fog-inator and cannot see the Big Idea because her vision is blurred.
- Riddle for the Ages: What evil scheme was Doof’s vision correction device made for?
- Seinfeldian Conversation: The episode begins with Phineas and Ferb trying to settle an argument between Buford and Baljeet about, of all things, vegetarian zombies.Buford: Guys, guys, could you settle an argument? Preferably in my favor? If a vegetarian became a zombie, would they still eat people. Mr. Smarty Underpants over here thinks they'd just keep eatin' vegetables.Baljeet: But they are, after all, vegetarians.Phineas: Hmmm, I guess they would eat things like heads of lettuce... ears of corn...Baljeet: Eye of potato.Buford: Leg of carrot! (Beat) What? Your carrots don't have legs? Where do your parents shop?
- Shout-Out: When Linda begins hallucinating, the bread bag suddenly grows arms and legs and holds a top hat and cane. It might as well have started singing, "Hello, ma baby, hello, ma honey, hello, ma ragtime gal..."
- Stealth Pun: The pies that come to life to Linda sing "Three-point-one-four-one-five-nine-two..." Making them pies singing about the first seven digits of pi!
- Swapped Roles: Linda is the one who sees the Big Idea, but thinks she's hallucinating, whereas Candace doesn't see it, because she cannot see it clearly due to the effects of Doof's Eye Fog-inator.
- You Can See That, Right?: Linda ends up seeing the boy's Big Idea of the week, but because she's hallucinating from sleep deprivation she asks Candace to confirm it's real. Unfortunately for Candace, she can't see anything after being hit by Dr. Doofenshmirtz's Eye Fog-inator, and Linda assumes it's just another hallucination.
