Phineas and Ferb are making a skyline for a game of sky tennis. Meanwhile, Doctor Heinz Doofenshmirtz has an inator which alters luck and intends to use it to make himself lucky and his brother unlucky.
Tropes:
- An Aesop: Mayor Roger Doofenshmirtz delivers one about luck being obtained through "hard work, strong networking and thoughtful actions in matters both business and personal". Phineas and Ferb and their friends show this point by working through all misfortunes they expect during their sky tennis match. Heinz becomes the other side of the example when the sleeping Perry wakes up and ruins his inator. Perry wouldn't have won so easily had Heinz bothered to tie him up when he had the chance. Likewise, Candace probably would have succeeded in busting Phineas and Ferb had she done more than just waiting for Linda to come home instead of expecting her newfound luck to do everything for her.
- Animation Bump: City Hall and the posts for the boys' air tennis game are much more improved in design than past seasons.
- As Long as It Sounds Foreign: Doof says that luck in Drusselstein is called "stinkelkrampen". Normally, Drusselstinians are heard speaking German, so the actual German word for luck is "glück".
- Bait-and-Switch: Doof tells Norm, who thinks he is a dog, offscreen "I told you, Norm, on the paper! On the paper!" It then cuts to Norm to reveal that he was actually drawing on a wall and not on a paper.
- Be Careful What You Wish For: Doof comments that his newfound luck is even better than having a genie. It cuts to a flashback from when a genie turned him into a hot dog.Flashback Doof: That wasn't a wish, it's just a song! It's not even a song, it's a jingle!
Present Doof: Ugh! You ever try to sue a genie? - The Bus Came Back: Planty the Potted Plant, who only appeared in one episode but had a sizable fanbase, returns briefly as a second Flynn-Fletcher assignment, but his cover is automatically blown when a fedora drops onto his head.
- Continuity Nod: When Mom gets home, Candace is seen reading The Iliad, the book she was supposed to read for book club in "Troy Story".
- Dartboard of Hate: During a flashback demonstrating Doofenshmirtz's bad luck, Doofenshmirtz is shown placing his brother Roger's picture on a dartboard and attempting to hit it with a dart. He ends up throwing it backwards by mistake, breaking a window and scaring someone's cat in the distance.
- Delusions of Doghood: Doof has installed some "guard dog" software into Norm making him act like a dog.
- Fun with Acronyms: Candace calls having a Perfect Hair Day a PhD, and Lawrence says he is also grateful for his PhD. Candace, naturally, assumes he's referring to a degree, but he wasn't. It is later revealed that Lawrence was referring to his Pillow Hurling Dexterity, when Candace assumes that a pillow has magically appeared when she fell over backwards.
- Good-Times Montage: Candace gets one as she enjoys her good luck set to the song played on the radio in Doofenshmirtz's van.
- Heavy Sleeper: Agent P took an all-nighter filling in for Agent Q and is exhausted, so he spends pretty much the entire episode asleep.
- Ink-Suit Actor: The sportscasters, Mark and Marcus, are modeled after their voice actors, the Sklar Brothers, comedians and real-life sportscasters.
- Laser-Guided Karma: During the song, Little Suzy Johnson is about to spray Candace with a garden hose, but, because of Candace's lucky streak, it ends up spraying on herself. Incidentally, this is the final appearance in the series proper that we see Suzy.
- Left the Background Music On: We hear the standard opening acoustic guitar riff, but the camera pans to reveal it being played by a street musician, who says, "Dude, someone's gotta play it, right?" He later returns to punctuate Baljeet's "Bad luck!" with a soap opera organ riff, and he turns once again to say, "Dude, I call it like I see it." The musician is voiced by the show's composer, Danny Jacob.
- Major Injury Underreaction: When a hammer falls on Ferb's foot, Phineas is at first relieved that Ferb is wearing his steel-tip shoes.Ferb: Actually, today, I'm not. (Beat) Ouch.
- Mondegreen Gag: Phineas mishears "Bust Day" as "Bus Day", which he comments that the latter isn't until a week from now.
- No Ontological Inertia: When the inator is destroyed it causes all the luck to be reversed.
- Not a Morning Person: When Candace wakes up, she gripes, "You know, universe? If you're gonna give me practically unbustable brothers, you could have at least made them not morning people. Yeah, I see ya down there. Hey, where's Perry?"
- Oh, Crap!: Candace when the pie she baked splats in her face and she realizes her lucky streak is over thanks to the inator being destroyed.
- O.O.C. Is Serious Business: Baljeet, who is normally a believer in logic, surmises that he and the gang have been cursed with bad luck! He even lampshades how out-of-character it is for him to say it.
- Portmanteau: Phineas and the gang are playing a game of sky tennis, or "skennis" for short.
- Radio Contest: During her lucky streak, Candace gets a phone call that she won a contest to sing backup with Love Händel at the Danville 24 Hour Music Awards. This plot point would be followed up on in "The Klimpaloon Ultimatum".
- Rule of Three: When Candace receives good luck from the good-luck-inator, she says she'll be convinced of this after a third good thing happens to her.
- Shout-Out: Doof's bad encounter with genies involved the "Oscar Meyer Weiner" jingle.
- Skewed Priorities: Lyla Lolliberry seems more concerned by the fact that she's the only girl at Agent-Con, and takes no notice to how she's the only human at the convention.
- Spiritual Successor: This episode likely served as the inspiration for Milo Murphy's Law, which concerns a kid with bad luck and all the ways he works around it.
- Suspiciously Apropos Music: The song played on Doofenshmirtz's radio coincides with Candace's good luck almost near-perfect, with the lyrics matching up to her activities completely.
- Tempting Fate: When Doof's good luck is over, he draws comfort from the fact he has several cans of almond brittle. He then opens one and it turns out to be a gag can with fake snakes. Candace has her moment when she makes a mention about the chances of the skyline being dragged into the ground.
