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I have a brilliant idea! This "TV Tropes and Idioms" website has a namespace for "Wild Mass Guessing". If I travel to a dimension where my daily life is a popular show on television, it would be simple to make such a page for that show. Once the locals are complacent, I can enter a guess as to what the secret weakness of Perry the Platypus is, wait for one of the wild, mass responses to be confirmed, and use that weakness to defeat Perry the Platypus and take over the Entire Tri-state Area!note 

Wild Mass Guessing for Phineas and Ferb.

Wow, there's even this "Wild Mass Guessing" for both of the movies now... note 


Phineas and Ferb

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    Jossed 
The whole series will end after 105 episodes.
The theme song explains that there are 104 days of summer, and it's implied (and stated by Candace in passing at one point) that Phineas and Ferb plan each one of their activities one day of the summer... one activity per episode! :O The series is really an encapsulation of one whole summer, which is why you never see any characters age! ... plus one- this, of course, excludes the Christmas episode, which takes place during winter vacation!
  • Actually, Word of God says that the next season will take place next summer.
    • What the crap kind of elementary school has summer vacations that are 104 days long, anyway? More like 74.
      • They used to be longer. Three months was once the standard, which is 90 days, and 104 isn't that much longer than that. Maybe Danville's school board is behind the times.
  • Jossed by Dan Povenmire, who says that 2 or 3 episodes might take place in the same day.
  • For those curious, the show's episode count is now nearly 200note 
  • Double jossed in Doof 101. It's set partially at Vanessa's high school, and Phineas and Ferb are shown tricking out the playground during their own school's recess, effectively meaning the series CAN continue past the beginning of school.

Perry the Platypus/Agent P is an implanted personality in a random platypus that was sent to a family in Danville.
Perry just wanders around on four legs and makes the chittering noise, but his eyes change more significantly and immediately than would seem natural (though he could just have a slack-jawed bored face going on because he's waiting for orders).

The trigger word could be "where's Perry", possibly canceled by "he's right here" and maybe "there you are, Perry" to keep his cover from being blown. There's not much evidence to support it, but the only evidence against is that he chittered once as Agent P in Candace's body.

  • Jossed, many episodes he's already gone before they say "Where's Perry?"
  • It could be triggered by his hat, and he simply has had his brain tweaked just enough that he can put it on in times of danger, or the hat does so itself.
    • Also Jossed. In one episode, we see him watching a soap opera, crying, and moving like a human being without his hat on.
    • For any Futurama fans, there is an episode where the scientist creates a hat that makes a monkey intelligent. Maybe he made the hats for all of the Danville animals, and then trained them to put it on when they are scared.
      • However Futurama is set about a thousand years or so after Phineas and Ferb.

Every pet in Danville is a secret agent
Many animals have been shown to be agents, and the episode "Day of the Living Gelatin" reveals that Pinky is one, too. So it's possible that they all are.
  • Sort of Jossed in that the koi had to be made into agents. However, it's possible that they just didn't think that koi would be particularly useful agents and didn't bother with them in particular.
    • It did say pets, and the koi fish were wild.
  • You are overlooking the fact that the other pet platypi aren't specifically said to be agents.
  • Suzy's poodle is almost definitely not one.

The Talking Zebra Is A Secret Agent Hired by The OWCA
Ever notice how he only appears whenever Candace sees Perry in secret agent mode? Perhaps Monogram hired him so Candace would think she's hallucinating when she sees Perry in Agent Mode. That would explain why Perry knows about him in "Phineas And Ferb Get Busted"
  • Jossed In the beginning of "Nerds of a Feather," unless it's possible that he shows up so much, he really is starting to become a part of Candace's subconscious. Or maybe he just showed up to keep up the facade

Phineas and Ferb will find a dodo bird in the series finale
Exactly one action from the songs will be left undone until the series finale in which it will be done, I am rooting for finding a dodo bird.
  • Jossed They find one in :Last Train to Bustville.

Everything's Better With Perry will be a Phineas and Doofenshmirtz Duet
  • That...is awesome.
  • Jossed, it was sung by someone else.

Isabella's father was a firefighter.
He died saving people and that is why Isabella is so obsessed with being a good Fireside Girl.
  • Sounds like a good idea for a little sad fanfic.
    • Jossed. The Familiy Christmas Special shows that he is very much alive.
  • Phineas is actually Adam Savage and Ferb is Jamie Hyneman. The show is loosely based on their childhood together, although the events where changed to make them more believable.

"Mission Marvel" will have Isabella being taken over by Venom
If you look at this image, you will notice that all of the superheroes (it looks like Thor on the skateboard) and Phineas and Ferb's friends are there... except for Isabella. This may be mere concept art, but what if this is going to be an actual scene in the special? We know that one song featuring Isabella will be airing this Summer, and she is clearly not feeling happy in it. There was also mention that the superheroes might get their abilities mixed up, which could end up being Isabella's fault (as suggested by the song title). Her resentment and sadness could lead Venom to consider her as a host due to what she is feeling right now.
  • Cue an epic "I Know You're in There Somewhere" Fight!
    • Jossed.
      • Yeah. They really just reduced Venom to a superpowered thug in that episode. Literally every other villain got more lines then him, and Whiplash was mostly reduced to comic relief. Oh well, still more than Sam Rami gave him.

"Mission Marvel" is Candace's fanfic
Well, Word of God already said that her subplot involves her passion by fanfics. Beyond this, considering that she is friends with Vanessa and curious, the idea that she eventually discovered about the existence of Dr.Doofenzmirtz is really believable.

"Mission Marvel" will have Isabella kicking the Red Skull's @$$.
  • Jossed.

Ferb's real name is Frank
His real name is Frank, but everyone calls him Ferb.
  • Jossed. Creator Dan Povenmire revealed in an interview that his full name is Ferbs.

     Relations to other media. 
In the future, Phineas and Ferb will be part of Apeture Science.
The main reason is that they build things to have more spectacle than function; a notable example is the episode where they try to cure Isabella's hiccups by building a haunted house.
  • The event where GLaDOS flooded the Aperture Science facility with neurotoxin took place in 1998, meaning it happened way before the events of the show. However, there are alternate dimensions...
Danville is somewhere near Springfield.
They're both impossible to place on a map, with monuments that should be really, really far away only a few hours drive from each other. The explanation? They're both located in that fantastically fictional state, North Takoma.
  • This. Just this. Springfield and Danville are in fantastically in a large place. Danville must be in North Takoma.
  • Or maybe Kentucky.
  • Or Springfield is in the Tri-State area! There!

Each episode is the same day all over again...
The only one aware of this being Candace, experiencing the "Groundhog Day" Loop which is this series.Let's say this is a possible scenario: Phineas and Ferb eventually create a very dangerous invention that goes too far and causes trouble (and maybe even as far as killing them...)Candace gains the opportunity to go back in time and try to prevent this from happening, the way she would do so it to bust her brothers so that they won't build something so outrageous.Her life is now a loop, repeating the same day (*or at least the same short chain of multiple days*) (each way around being different to give the episodes diversity).The only way the loop can be broken is if Candace successfully busts Phineas and Ferb, which is why she's so dedicated in doing so.

Phineas is a spark.
He had his breakthrough at the beginning of the summer, or the last day of school. If the series is in anachronic order (because it ends with "Phineas and Ferb get Busted"), it will be shown in the last episode.
  • Except of course that "Phineas and Ferb get busted" isnt the end of thr series and they dont even get busted in that episode anyway as it was all a dream.
how else would they say, make a rocket ship? find extinct animals? or even ones that don't exist? and they do all of this because Phineas is bored.

Phineas certainly acts spark-like at times, having that crazy-peppy focus right after he knows what they're going to do today, and especially in certain scenes such as the Haunted House episode's musical sequence. And he does seem to have a way with getting people to go along with him by just talking to them, most notably "Yes, yes I am".

Doofenshmirtz may also be a spark, but a weaker one. His specialty is not technology, but genetics (or something similar that involves cloning, uglyinating, and other weird biological effects), since he can't tell the difference between a Death Ray and a giant sundae machine.

  • Doofenshmirtz isn't weak at all. Heck, he can create a device that attracts wood like a magnet does metal.
  • Obviously, Ferb is also a Spark.
    • Of course not, Ferb is a construct. That's why he speaks so little and has an accent: Because it's more difficult to make something with the vocal dexterity to talk than something built just for welding and tight spaces, he has to focus a lot to do so.
  • Sorry, mis-phrased that. I meant to say he had a biology specialty, and was weaker in mechanics. And Ferb isn;t a Spark, he's a Time Lord who accidentally went to the Heterodynes' dimension and brought back Phineas. Side theory: Ferb commisioned Doofenshmirtz to build his and Phineas' family.
    • So, theoretically, Doofenshmirtz would actually succeed much more often if he stopped trying to work in your typical 'evil genius' area of mechanics and switched over to cloning an army or something?
    • He tried that. It went about as well as anything else he does.
    • Only because he decided to put a Delete All button on it, which Perry pressed. It seems to be common for Sparks to put features on their inventions because they could, no matter how silly and petard-catching said feature may be.

Rather than Sparks, Phineas and Ferb are Geniuses.
And, of course, Isabella is Phineas' Beholden, though she is rather better off than most of that sort. The reason that Perry's adventures so often end in the instantaneous cleanup of the Big Ideas is that the OWCA is devoted to monitoring Geniuses (Doof, Poofenplotz, P&F, etc), and has arranged it that way. It also handily explains why physics is merely a plaything of the characters in Danville- with at least four Geniuses (and maybe more- Baljeet built a freaking PORTAL TO MARS!) working in such close proximity, it's bound to be a Weirdness Magnet.
  • While all the Geniuses in Danville are Artificers, Phineas and Ferb (and probably Baljeet) are Staunens, while Doof is a Neid. We don't really know enough about Poofenplotz to place her.
  • Also, Phineas and Ferb have a tendency to Kitbash their wonders, which is why they fall apart after a set amount of time, usually at a point where Candace is around.
    • They build a giant airplane out of folded paper that flies them 2000 miles before disintegrating. I repeat, a folded paper airplane. Definitely kitbashing.
      • We see normal, presumably un-Inspired people interacting with P & F's inventions. See "Rollercoaster," where a bunch of children are shown riding (and therefore touching) the coaster.
      • Phineas is an unmada, with the worldview that 'Summer Belongs To You', so his wonders remain stable while within his unmada field.

There is some connection between...
  • Dr. Doofenshmirz and Revolver Ocelot. The ocelot thing may have a deeper meaning than apparent at first.

Ferb accidentally took The Doctor's fobwatch.
  • Ahem.
    • caused this troper to face palm before even clicking the link, cus I know exactly where it's going. Maybe Phineas IS the doctor and Ferb is the current companion.
      • So the Doctor finally got his Ginger Hair
      • And Isabella can be River
      • And considering that The Doctor seems to be getting younger and younger with each regeneration, him becoming a tween by the time he reaches his thirteenth incarnation doesn't seem too far fetched.
    • The boys are able to make their technology Bigger on the Inside. Clearly Time Lords.
    • That could explain the Time Shift episodes.

The show is set in the same world as Heroes.
This is why characters manage to get to different places so quickly. It's the same quirk of geography in Heroes.

The series is set in the same universe as The Melancholy Of Haruhi Suzumiya and Ferb is actually a Humanoid Alien Interface
  • Weird hair colour? Check.
  • Speaks rarely and only to certain people? Check.
  • When he talks, it's just one or two words that others probably would never use? Check.
  • Extremely intelligent? Check.
  • Shows almost no emotion? Check.
  • Very caring in the inside and expresses a crush on another character in a weird way? Check.
  • Next to an excitable person who is constantly bored and wants something to do? Check.

There are WAY to many similarities to Nagato Yuki. He may have been sent to observe Phineas, who often has some pretty weird ideas and lots of energy. Maybe he's another candidate for godhood, besides Haruhi.

  • The problem is, Ferb is being similar to Yuki and only Yuki, whose original purpose was not as Haruhi's primary observer. The one who was originally the observer, Ryouko, had a ton of personality.
    • Ryouko was programmed to display emotion but her true "feelings" were different. Just listen to her image song.
Note how her swimsuit vanishes in Mom Attractor between the time she starts chasing after and catches up with Linda.
  • Candace uses her own powers to keep from busting her brothers for using the powers she herself gave them. This is why the vanishing evidence trick is split second coordinated with her own actions. This can only be averted when she is up against an equal power, and only she herself is her own equal. The easiest proof of this are the many many plots that hinge on Candace not noticing that something has been switched. She will gladly run all over town, but keeps herself from noticing that she's carrying the wrong photograph all that time.
  • Phineas is the esper and is sure to always praise his sister so she doesn't make closed spaces.
  • Isabella kept a timelooped copy of the time machine and is the time traveler.
  • Jeremy only keeps up a pleasant facade. Internally he's really The Snark Knight. He's only using Candace so he can spy on her brothers. (Take note of how much more closely he watches them than her.)
  • Van Doof is the Sasaki or alternative goddess, which is why the things that Heinz and Phineas build are usually in conflict. (These things are operating as proxies of the two goddesses.)
  • 8The items on that list could be indicators that Ferb is a Vulcan. He has a weird hair color because the Vulcans who sent him to earth disguised him improperly. He almost never speaks because he failed to learn as much English as those around him. Being a Vulcan might also explain his extreme intelligence, and definitely explains his lack of emotion. Also explains him giving Buford the Vulcan nerve pinch. As for the crush on Vanessa, Vulcans are capable of love, at least according to Star Trek (2009).
    • Hm... That doesn't belong exactly here, but maybe the Vulcans are an evolved form of rebelling Interfaces? They are biological and have been shown to be capable of turning against their programming (like Ryoko and latter Yuki).
  • A bit Jossed in "Invasion of the Ferb-snatchers", though we do know that he wasn't stereotypically an alien. And he looks like his grandfather Reginald, so he might be a half-alien.
    • Actually, the episode suggests that Ferb is still a human, but invaded by an alien. In this case, Ferb is an alien, or a half one, that is.
    • Well, in the episode Ladies and Gentlemen, He is Max Modem!'s song "It is an Alien", it might hint that Lawrence had an alien girlfriend before marrying Linda. And maybe they produced Ferb.
      • To clarify the above, "Alien Heart" is called "She's/It's Alien" in Spanish.
    • Also, in the ending "Mommy Can You Hear Me?", Ferb looks very alien-like.
  • The entire series actually takes place during the Summer of the Endless Eight explaining why it lasts far more than the hundred and four days mentioned in the theme song (which is already rather long).

The boys are both reality warpers.
However, their powers are not strong enough to majorly affect anything alone. But when they both have the same idea, then they can affect everything from the laws of physics to the location of Danville.

The giant squid is Cthulhu (or rather its head- its body doesn't fit onscreen).
And THE ENTIRE TRI-STATE AREA! is Lovecraft Country. It explains everything.

Phineas and Ferb take place in the same universe as The Venture Bros.

The OWCA is actually an experimental subsidiary of the OSI that has been working with animals as a quick and cheap way for creating a mass surge of agents. These agents are used to combat and neutralize the lowest echelons of the Guild of Calamitous Intent, specifically those who are either incredibly minor threats or the most incompetent members within the Guild.

This way, the more efficient human agents of the OSI don't have to bother with the pathetic peons that make up the lowest ranks of the Guild, and the Guild doesn't have to worry about their lowest ranked members bitching and whining about having a nemesis, as they'll be busy duking it out with their animal foes.

Related to the above WMG, Phineas and Ferb is either in the same universe as, or adjacent to, the SCP Foundation universe.
I give you the following quote from the Foundation chat logs:
<Ian_Maxwell>: Phineas and Ferb do things that stomp all over understood science. They're Keter-level themselves.
  • The O.W.C.A. could be an SCP. Unusually intelligent animals would certainly be anomalous enough.

The show is set in the same world as Power Rangers Mystic Force
This is how they managed to discover something which didn't exist (at least in our realm) in the opening credits. They accidentally stepped into the Magical Realm where fantastical things do exist.

The show is set in the same world as Total Drama.
Oddly intelligent (but non-speaking) animals, weird technology, and selective characters with really weird heads.
  • Compare Harold to Carl. Is This Troper the only one who somehow gets the feeling they're related?
    • Carl might even be related to Beth.
    • How about Trent? He's one of the teenagers who like the major (Carl to Monogram; and Trent to Chris).
  • Vanessa and Gwen catch online.
  • Sierra and Irving are best friends.
  • Let's say that Major Monogram and Chris McLean are related, based on the fact that they deliberately break rules, and care about their lifestyles.
  • Candace could ask Heather for help on busting her brothers, knowing that Heather got many people eliminated on "Total Drama".
  • Anne Maria and Mindy (the same girl who took a picture of Candace/Vanessa in "Hail Doofania") fight over the same man.
  • And as of World Tour, we even have another similarity—both involve characters who can break into ad hoc musical numbers!

Perry is an Alternate Universe version of Linkara

Think about it; They have the same hat, they have groupies, main enemy is a Mad Scientist, they have an Alliterative Name, and started their series in 2007.

The organization Perry works for was founded by Osaka.
There's just no other way to explain the fact that each of its agents is an animal, or that "magical elves kidnapped Doofenshmirtz and took him to the Land of Angry Corn People" thing.
  • Sakaki was involved in the recruiting process.

Phineas and Ferb are the reincarnations of Fred and George Weasley.
It would explain how they build everything so fast—by magic. And as to how they get to places so fast, they Disapparate.
  • Word of God says that none of their projects will be "Magical" in nature.
    • One fan's superscience is another fan's magic.
  • "WITCHCRAFT!" Buford knows more than he's letting on.
    • All good and well, except; the Harry Potter stories take place during the 1990's, with the Battle of Hogwarths occuring around may 1998, while Phineas and Ferb takes place in present time, probably barely 10 years after the Battle of Hogwarths. Only Fred dies during the Battle for Hogwards. George survives and lives on for many years afterwards, so how can he reincarnate alongside his brother?.

Phineas and Ferb are supposed to be the young versions of Adam and Jamie.
Adam does most of the talking; Jamie specifically wanted him on Mythbusters because Jamie didn't think he was interested enough on his own.

Phineas and Adam both come up with most of the crazy/wild stuff, Jamie and Ferb are the ones usually shown actually designing/building something.

Candace's obsession with 'busting' is meant to be a clue.

  • Then Isabella, Buford, and Baljeet would be Kari, Tory, and Grant.
  • Phineas and Adam both have red hair. Jamie has no hair, but it might be green. And he wears a beret because he's an alien!
    • This troper loves this idea
    • Maybe, they're just both the Five-Man Band.
  • The creators said in an interview once that they watch the Mythbusters! There, it's proof!

That would make the Adam/Jamie "Fan Art" extra squicky...

  • Nah, stepbrothers, remember?

The show is set in the same world as the Superman films
This also explains the lack of the laws of physics.

Dr. Doofenshmirtz and Perry represents fights in the scientific community
Is there any explanation, besides Doofenshmirtz being evil, that explain why an agency spend resources fighting a mad scientist? For me, this represents the fights in the scientific community for research. Think about it:

  • When Dr. Doofenshmirtz get his work published at Evil Beat Magazine. (A Journal parody)
  • The inventions that Doofenshmirtz make are kind of helpful, for example the ray to accelerate aging for cheese.
    • Cut Lex Luthor a Check.
    • The cheese-aging ray was to help with his cheese-making hobby while taking a break from evil schemes that Perry the Platypus would just ruin anyway. Not an evil scheme in and of itself until Perry's arrival and subsequent glutting of the entire cheese made him mad enough to think of the possible evil applications, so I guess you could say that episode inverted Cut Lex Luthor a Check? (Or inverted the aversion? Double Subverted, maybe.)
  • Perry being too light with his nemesis.
  • Doofenshmirtz explanation for a fake doctorate. (Similar to the Nagib Callaos scam)
  • Doofenshmirtz Institute of Evilology (A reference to the fake IEEE scam conferences of Nagib Callaos)

After the Aglet Song, The Question panicked and attempted to convince the rest of the League to go to Danville before the Aglet Menace struck again.
I smell fanfic.

Suzy is an descendant, or at least an alternate universe version, of Darla Dimple

... Yeah.

This takes place in the same universe as Homestar Runner
Interesting animation style? check. Very popular? check. Runned by Rule of Funny? Check. Lack of physics? Check. Not very threatening villain? Check. very epic (not to mention very catchy music? Definite check.

The show takes place in the Modern Warfare universe.
Hence the ease of access to heavy-duty hardwares.

Perry is the result of the same secret mind swapping technology as Klaus and Reginald.

The whole show is actually just Isabella's "Leave it to Beaver" fanfic
You know it'd explain so much. And create so many Dream Within-A-Dream dream's dream's dream your brain explodes.
  • This theory made me laugh so hard I thought I was going to die.

the talking zebra is an old imaginary friend of Ed's
Ed has implications of a Reality Warper, right? So, he once had a zebra as an imaginary friend. After he got tired of it, he told him to go with someone else. That explains why he keeps calling Candace Kevin; she has the same hair color as him note 

The Fireside Girls Are Part Of The Kids Next Door
.

That would explain why they are expected to Wrestle alligators and build Race Cars,Time Machines, etc..

  • I demand a crossover fanfic.
    • While we are on the subject of KND, Candace was previously a remember before..well you know, and works for the teenagers, hence the busting.
  • They are obviously the Girl Scouts of the Kids Next Door. I don't however see this working for Phineas and Ferb. I mean why would they not contribute their inventions to the Kids Next Door?
    • Easy— they're a neutral party. (Notice that they didn't take part in the F Games— it would have been over before it even started) We still don't know how old they are, but it's a definite possibility that they're on the cusp of teenager-dom and don't want to put a stop to anyone's creativity once they reach that age. Or you could say that they're just building stuff FOR SCI-- ...fun.

Baljeet is Raj
Think about it: he's Indian, nerdy, slightly gay and shy around girls. Perhaps Raj is a nickname he picked up somewhere, or he had to change his name at some point.
  • But Baljeet's a human! Wait...we are talking about the same Raj, right?
  • Baljeet's surname is Raj, according to the "Letters to Santa" bonus feature on the DVD A Very Perry Christmas.
    • But Word of God has retracted this. Look it up, i'm lazy.
      • Actually, Word of God was that it was "Rai" and that was what was retracted. "Raj" is presumably the replacement for "Rai."

All of the main characters are alternate universe versions of The Big Bang Theory characters.
Phineas is Leonard (The Hero), Ferb is Sheldon (The Lancer), Baljeet is Raj (like the above WMG, also The Smart Guy), Buford is Howard (The Big Guy), and Isabella is Penny.

Phineas is related to Haruhi

Let's Take a Quiz is based on QI
They both involve speaking pretty much all the time, the answers you give aren't really the important part, and the ending of their theme songs sound similar (though that last one could just be me).

The show is set in the same universe as Hey Arnold!.
Young Isabella was caught up in that whole "It Girl" fad where people were dressing like Helga Pataki. She just stuck with the clothes despite the fad passing.Or, Isabella is Helga in a kinder, gentler alternate universe. She retains the wardrobe of the Hey Arnold universe, and the un/semi-requited crush on the lead character. But on the other hand, she has a loving, involved mother, and is well-liked by her peer group. And a different hair color. And lives in a more prosperous neighborhood.

Candace will Marry Squidward

You heard me.

  • So Candace is into hentai?

Phineas and Ferb are AU versions of Edward and Alphonse Elric.

I don't even like Fullmetal Alchemist, nor Anime in general, it's just that everyone else seems to come up with this stuff.

Mishti is related to Matthew Patel

Albert is Batman.
He's shown to be very good with tech, and it's been shown that he can knock down doors, so he may have fighting ability. He just acts like a jerk to hide his true altruistic nature so nobody catches on.

...Stop looking at me like that.

  • Oh god that makes so much sense. No, really.

Irving grows up to be Douchey McNitpick

The OWCA (Organization Without A Cool Acronym) is an offshoot of/affiliated with SPORK (Secret Paramiutary Organized Response Kommand).
Because both employ unintelligible but highly skilled animals with hats in the pursuit of mad scientists.

Danville is very close to Sunnydale.
When the Rollercoaster Musical Episode happened, Sweet was paying Sunnydale a visit.

Dr. Doofenshmirtz is a parallel universe Doctor Insano.
Multiple choice past? Check.Ineffectual Sympathetic Villain? Check.A card-carrying villain Played for Laughs,his nemesis has a cool hat, and is responsible for many WMGs? Check,check and check.

The entire series is Dib's delusion, when/if he finally cracks.
Just think. Phineas is his inventive, scientific, smart, and curious side. Ferb is his secluded, silent, and goth-girl (Gaz) relating side, and also the book-smart one. They both have an interest in the paranormal, as evidenced in "Get That Bigfoot Outta My Face" or "One Good Scare Ought to Do It!" Candace is his, well, "busting" side, a projection of his obsession about Zim. She never busts anyone, neither did Dib. Doofenshmirtz is obviously Zim, a watered-down and less threatening version. Perry is his heroic image of himself as "savior of the Earth." The missing parents and broken families represent his awful family life. The happy atmosphere is exactly the opposite of what his world is like, creating sort of a haven for his bruised and battered mind.

"Out of Toon" took place on a Friday.
C'mon. Dr Doofenshmirtz mentioned "getting down" a lot...
  • I just died.

Phineas is Pyramid Head
I'm just going by head shape.
  • You're kidding. I know this is WMG, where all logic, rational thinking, and traditional thought patterns are flushed down the toilet, crumpled, smashed, torn apart, melted, reformed, torn apart again, taped together, and burned, but... seriously?! You've taken modern politics and put them to shame!

The show is an alternate reality version of Dexter's Laboratory
Phineas is Dexter; they are are both genius children with red hair. Candance is Dee Dee; both are annoying older sisters who meddle with Phineas/Dexter's creations. Linda is Dexter's mom, they are oblivous to their sons' intellect and they look very much alike. Lawrence is Dexter's dad, they look alike too. Ferb doesn't match anyone though.
  • No, wait! Lawrence isn't Dexter's dad, because Lawrence isn't Phineas's or Candace's biological father. In the P&F universe, Dexter's mom gets married twice.

P&F are in the American Dad! universe.
The smart animals work for Stan Smith's CIA and Lawrence Fletcher is a MI-5 agent.

The Fireside Girls are connected to the Junior Woodchucks.
Both have a handbook containing knowledge on everything ever, and their members have a tendency to be affiliated with main characters.
  • The only problem being that one exists in a humans-only universe and the other in a...Disney world. Quack Pack partially averts this, but PnF never shows Disney-Folk.
    • "Disney Anthros" Earth is another planet, possibly the origin of the OWCA's founders. The Fireside Girl and Junior Woodchuck Handbooks are offshoots of The Hitchhikers Guidetothe Galaxy tailored to the organization's planet by the group's leaders.

Phineas and Ferb will make a shout-out to Angry Birds.
Perry does look like a potential Angry Bird, doesn't he?
  • Been watching Conan, eh?
    • No, just some post saying that he thought that Perry was an Angry Bird.

Think about it:

- Miserable Childhood? check

- Abusive Parents? check

This is why his childhood makes little sense. He has gaps in his memory that involved his fairies.

There are three possible candidates as to what his fairies where

1. Balloony: this is why Balloony was Doofenshmirtz's best friend, he was his fairy disguised as a balloon (A fairy with an odd face, at that.) The reason he floated away was because young Heinz accidentally revealed his fairy. The reason Balloony changed was because he is know just a normal balloon.

2. Doof's Giant pet cockroach, Hoarfrost: This is why Hoarfrost was what made Doofenshmirtz's childhood bearable, he was Doof's Fairy Godparent.

3. Ocelots: They where his parental substitutes, after all...

Candace, Phineas and Ferb are demigods.
Candace and Phineas are the children of Apollo, who met their mom while she was doing her "Lindana" thing. That's why they're so musically talented (seriously, Candace can play every instrument that begins with the letter 'b' and then some!) and can turn life into a musical at a moment's notice. Bonus points for Candace's crush on a guitar player. Ferb? Well, with his super-smart history-buff dad and his two main interests being reading and architecture, he's obviously a son of Athena. His hair was honey-blonde, but he dyed it green.
  • I smell a Fan Fic!
  • Forgot to mention that Candace is described as "flighty and unfocused" (ADHD, anyone?) while Phineas, despite being a genius, writes the letter "P" backwards in his own name—a telltale sign of dyslexia.
    • It's only once. In "Oil on Candace" Phineas' signature had the letter "P" facing the right way.
    • Well, dyslexics aren't consistent with their mistakes. - OP
  • Further evidence:
    • As mentioned in another WMG, "Phineas" and "Candace" are names derived from Greek. (Ferb's name, too, could be derived from Greek—after all, we don't know what it's short for.)
      • Phineas comes from Hebrew, not Greek.
    • Phineas is interested in such things as Trojan War reenactments and Greek-style chariot races. Despite being practically fearless, he reacts with fear when confronted with what he thinks is "the Minotaur!" (Coincidentally, the Minotaur was one of the first monsters Percy Jackson faced.)
    • In The Movie Ferb is shown to have fallen asleep reading The Odyssey. (In the original Greek?) He's also the one who (quite randomly) informs Phineas that "gladiators were Roman, not Greek."
    • The statue of Medusa resembles Candace, and when you consider that Everyone Is Related in Greek mythology...
    • In The Lost Hero, Jason is commenting on a few of the surrounding cities (in California), and he happens to mention "Danville".
    • The original Phineas from Greek mythology appeared in The Son of Neptune. On the day of the book tour that this detail was announced, Vincent Martella made a guest appearance. Phineas' scene in the book mentions the name "Perry" for no particular reason.
  • The boys and Candace have been safe from monsters so far because of a) Perry the Platypus, b) the boy's building abilities (they'd mow those demons down), c) Some Mysterious Force, or d) all of the above. Besides, they'd rather spend their summers in the backyard then at Camp Half-Blood, and as long as they're taken care of, right?

Perry's Dream Within a Dream Was caused by the Dream-Lord.
It seem's like something he would do.

Meap is a Plumber.
He's the local plumber in the vicinity.
  • Coming from the Calvinand Hobbes WMG page, there's a theory that Phineas and Ferb, Calvin, and Ben 10 are all related. This just makes it more awesome.

The Tristate area is in the same universe as Adventures in Odyssey
A recent episode of AIO involved a teen girl getting frustrated with her job and leaves town. Whit and Wooten find her at a doughnut shop that has the best doughnuts IN THE ENTIRE TRISTATE AREAAA!!!

Phineas and Ferb get all their building supplies from BLU.
And Doofenshmirtz is a RED stockholder. That's why he's often indirectly responsible for many of the boy's inventions disappearing. Associating with RED immediately pits you against anyone associated with BLU. Besides, only Blutarch Mann would be crazy enough to sell any of that stuff to 10-12 year olds.

Thaddeus and Thor are just Phineas and Ferb from the Mirror Universe.

Perry hangs out with the Disney Tsum Tsum when he has time after battling Doofenschmirtz

This is why he's the only Phhineas and Ferb Tsum

Danville is where Recess actually takes place
In Recess, it's never been revealed what town the characters live in. It could possibly be Danville. Both shows have a red-haired smart girl with glasses named Gretchen, and P&F Gretchen might be the daughter of Recess Gretchen (maybe). Both shows exist in the Disney Channel Animated Universe, so it could be possible, and both shows have featured mirror doubles of the cast. Phineas and Ferb had Thaddeus and Thor, while the Recess gang (and everyone else at Third Street School) had the kids at 98th Street School. And during the brief moment where we can see Phineas and Ferb standing outside their school during "My Undead Mummy and Me", from what we see of it, they might be attending Third Street School (With a slightly different paint job- might've been from after the Recess gang left).
  • If the timelines are the same (Recess is late 90s, Phineas and Ferb is late 2000s/early 2010s) this would make the Gretchen from Recess a teenage mother, which this troper can't imagine her being. A cousin is more likely.

The boys are Creator Witches
The definition of a Creator Witch (as quoted from Umineko Wiki) states that "Creators are sacred beings who can create 1 out of the sea of nothingness. They can give birth to 1 from 0, give birth to the endless, and then return it to 0 again in a flash. They are freed from all restrictions, and the Voyagers sometimes even call them gods."note  Sound familiar? The boys are borderline Reality Warpers as it is, and while they've been shown ordering parts for their inventions, we never see where all the money used to pay for them comes from and it might even be possible that the parts only appear because they genuinely think they're building normally, thus causing us to see and believe this as well. And they're useless. Going back to the part about the ordering, it could be that they know they need to order all the stuff but are unaware of how much money that would actually cost.

In this case it's safe to assume the boys are not the only Creators in the cast. We'll assume Doof is one (and also thinks he's building normally), and probably uses his magic A LOT, being the Cloudcuckoolander he is. We should also assume Umineko is like Inception so this all makes more sense. You don't necessarily have to believe in magic (in a literal sense), you just have to believe something is possible and actually happening.

And this all leads me to Linda. It'd seem she may also be able to produce enough anti-magic toxin to erase or ruin Creations made by any of the above, essentially the opposite of a Weirdness Magnet; after all, she never sees what the boys are doing, no matter how absurd the activity or how hard Candace tries to show her, and the flashback with her and Doof on a blind date shows his invention not working at all and even exploding if I remember correctly, unlike pretty much everything else we've seen him build which functions properly and mainly fails because he puts a Self-Destruct Mechanism on it or something. From an Anti-Fantasy stance only what she sees is actually real, from a Pro-Fantasy stance, she just never sees it. From an Inception stance, it's not real for her but for everyone else it's there. She probably believes all of these things can be done, just not that they'd actually happen (least not on a regular basis). It's likely she doesn't actually recognize Perry as real but plays along with the kids anyway, which would suppress her anti-magic toxin, allowing him to stick around. Since she doesn't believe, she's prone to releasing toxin and the Creations are never there when she's around, but on some rare occasions she will believe and see thanks to circumstances (which almost always ends badly for some reason).

And speaking of Perry, he's the product of multiple streams of magic affecting each of his personas. Mindless Pet Mode comes from P&F, who think of him as a cute pet who, of course, doesn't do much, not counting going missing all the time (Anti-Fantasy would state that he's a toy they're always losing), and Agent P comes from Doof, who was lonely and thinking of secret agent platypi for some reason. Since everyone seems to believe either of those personas could be real and actually exist (except again Linda)/have a Weirdness Censor, both of them thus exist. No idea what this says about Carl and Major Monogram, but their perceptions are probably why both personas are the same person...er, platypus.

As for Candace, I dunno, but she's definitely trying to show Linda for...some reason. It's pretty clear she believes, but unlike everyone else she seems to think that very thing she believes in is a bad thing. Either she's trying to take advantage of Linda's anti-magic toxin or she's doing the same thing she does without influence from this theory.

Yeah, I think that's it.

  • They can also be Loopers, if the show operates in a time loop. This can explain the Alien Ferb episode.

note 

Kyubey will try to contract Candace
And this being Candace we're talking about, I guarantee she will wish to successfully bust her brothers. Whether you're not familiar with Madoka Magica, you will know this is a bad idea because either:
  1. Linda will react horribly like in "Phineas and Ferb Get Busted" (but up to eleven)
  2. Doof will take over. And be a tyrant, of course. (Also Up To Eleven)
  3. (insert some other horrible effect here...after taking it Up To Eleven)

This, along with having to spend all her time fighting witches instead of supporting her relationships, will completely darken her Soul Gem and she will turn into a witch. "Quantum Boogaloo" takes place in a timeline where she doesn't contract.

In the future, Phineas and Ferb will have a crossover with Gravity Falls
  • Disney is almost bound to bring together its two biggest cartoons. If they were able to meet the Marvel superheroes in person, then this is very likely.
    • Doofenshmirtz's scheme may be involved with the gnomes that almost married Mabel. Dipper and Candace will talk about how they can never get their elders to see the weird stuff going on. Jeremy will perform in a band with Robbie. And there will be some sort of portal between Gravity Falls and Danville; where characters from P&F begin to take the GF animation style, and vise versa.
      • However unlike Linda who doesn't see nor know about the weird stuff that goes on... As revealed in season 2, Grunkle Stan KNEW ALL ALONG about the weird stuff in Gravity Falls but lies about it to Dipper and Mabel just to keep them safe.

ZONE-tan will make a flash animation of Phineas and Ferb
Because why the heck not? They already did with Motorcity.

A Phineas and Ferb and Spongebob crossover will be made at one point
  • I doubt this one given both the commercial rivalry as well as the Fandom Rivalry, and on the off-chance it somehow does happen most of the fandom will go "Hell no".
    • Considering how defensive both Viacom and Disney are of their properties, this would probably never come to fruition.

The O.W.C.A is a future offbranch of the C.I.A from Western Animation/Ameri
In Western Animation/Ameri, The C.I.A took a homeless man off of the streets to do experimental testing in exchange for a sandwich, putting his brain in the body of a Koala as an undercover field agent. Because "No-one suspects the cuddly adorable Koala to be a badass fighting machine" so perhaps they realized "Hey this is a good idea, we can make more of these agents" and created a branch solely for animal agents. But couldn't think of a cool acronym. Coupled with the fact that, Seth McFarlane the creator of Western Animation/Ameri worked with Dan Povenmire at one point, and even did a voice on Phineas and Ferb. Think about it ;-)

There will be another Marvel special
They joined forces with some Marvel heroes once (Spider-Man, Thor, Iron Man and the Hulk to be precise). Next time, they could fight alongside Captain America, the Fantastic Four and even Carol as Captain Marvel, with a little Deadpool on top. Or maybe they'll cross over with Guardians of the Galaxy or Big Hero 6.

Since both that song and Lindana's single are sung by Olivia Olson.

[

Linda is The Blitz.
Which is why she never sees what the boys have done in time.

Everyone who contributes something to this folder wants to see their guess be turned into a fanfic.

Doofenshmirtz's Mother is cousin to The Red Skull
Red Skull mentioned he had a cousin who married a Druselstinian and now she is dead to him. Add to that she's a badly abusive parent, though nowhere near as evil as her war criminal relation. Poor Heinz was destined to be outclassed within the family, even if he were truly evil.

Perry hangs out with the Disney Tsum Tsum when he has time after battling Doofenshmirtz
It’s why he’s the ONLY non-Sensational Six/Animated Canon AND Disney Channel character to be in the anime.

    The Tri-State Area/Danville 
Danville isn't in any particular location; it teleports somewhere else daily.
How else could it be one or two hours' drive from Mount Rushmore one day and near the Smithsonian the next? The question isn't "where the hell is Danville?" It's "where the hell will Danville be tomorrow?"
  • Doofenshmirtz and Perry the Platypus keep moving Danville during their battles, and everyone is just used to it.

Danville is on an alternate, smaller Earth.
It has many of the same important locations, such as Mt. Rushmore and The Smithsonian, within a couple hours driving distance of a town that, according to Doofenshmirtz's wall map, appears to be somewhere around South Dakota or southern Minnesota. Mount Rushmore could be that close to somewhere in those states, but the Smithsonian can't without major geographical twisting...

The mom had a hit single that was being translated into some twenty-odd languages, so she must be known in at least twenty countries with different primary languages....

The cars in Danville are much better than in the real world.
That way a driving distance of a couple of hours encompasses an area of several hundred miles, solving any geographical discrepancies the show might otherwise have.
  • Phineas' mom's car was also identified by Isabella as "a massive source of power", even after they used its battery to power a homemade space shuttle's battery, though I don't know if this was before or after they first modified the car.
    • Um, The "Massive power source" was Doof's Giant robot, But Phineas and Ferb could not see the giant robot, so they assumed it was the car.
    • After, if the episodes' airing date is anything to go by.

Elaborated on this previous Guess, Danville is really a fabricated town for budding Mad Scientists, and the OWCA exists to stop the evil ones and protect the rest of the world.
It was mentioned on the main page, so I slipped it in here. Phineas and Ferb seem to be budding prodigies. It certainly explains why Doof only focuses his plans on "the Tri-State Area."

OWCA founded Danville.
The organization is a lot older than it seems. They built a secret headquarters underground to fight the British. Animals were originally used as messengers and spies. Native American shamans worked for OWCA as animal translators. The OWCA manipulate/influence earlier settlers to found the town of Danville as protection. Or the settlers decided to found the town, totally unaware of a secret base underneath them, but OWCA uses it as an alibi. After America won, the OWCA moved to fighting other kinds of evil.

Danville was founded by Druselsteinian immigrants.
It would explain why so many of the characters seemed to have ancestors living in Druselstein as shown in the episode The Monster of Phineastein and Ferbgor as well as why Candace and Princess Baldegunde look so much alike.
  • Why not just assume that Baldegunde and Candace's mothers are identical twins? This would explain the Druselsteinian elements in Linda's cooking. (Or she could have picked that up from the immigrants or her own time abroad.)

Danville is located in New York, or at least close to New York.
Since in the hoverboard game in the official website, there's the Doofenshmirtz Evil Inc. building when you choose "New York" as the location. And in Summer Belongs to You, the gang passed the Statue of Liberty seconds before they landed at Danville.
  • Note that in real life "tri-state area" most commonly refers to New York, New Jersey, and Connecticut (or at least that's what Google searches lead me to believe).
    • It's also worth noting that the borders on the map of the Tri-State Area in "Flop Starz" don't coincide with any real borders, except maybe a stylized depiction of the borders of Nebraska, South Dakota, and Iowa.

The Tristate area is actually every Tristate area.
This is based on the WMG above about the world the show takes place in is actually much smaller than our world. Why isn't Dr. Doofenshmirtz ever shown to be at war with the U.S. whenever he takes over a small portion of it? Because the Tristate area is actually all Tristate areas and thus he's actually taking over the world.

It would certainly fit his sense of humor by referring to the entire country by term for a small region.

The Tri-state Area is of Illinois, Wisconsin and Iowa
Danny sang that lived "down in South Illinois" thus placing the Tri-state Area somewhere north of there, The Tri-state Unification Day is celebrating Iowa joining the Union, the adjacent area was Iowa before statehood, and the bi-state area was Wisconsin-Illinois before Iowa statehood
One of Phineas' inventions was a musical-machine.
Which gave people exposed to it the ability to make well-versed songs that rhyme and good dancing on the spur of the moment, which is why everyone is good at singing and choreography. It's still operational somewhere; that's where those songs that no one on screen is singing comes from.
  • Which actually explains the entirety of Roller-Coaster: The Musical. Phineas wasn't simply being savvy, before suggesting the plan to Ferb he cranked the machine up to eleven!

     Cancelled 2014 Feature Film 
A tiny hint on Phineas's real dad and Ferb's real mom will be revealed in the feature film.
It'll just be epic.

Phineas joins the OWCA
The film will deal with Phineas and Ferb, played by their voice actors, as young adults not adjusting to the world of adults, which doesn't value imagination and cleverness. They'll join the OWCA for a few reasons, but primarily because the agency makes them feel appreciated. By the end of the movie, let's say, Isabella finds out, and the Agency tries to force him to relocate. Instead he decides the Agency was just using him and quits.

Dr. Doofenshmirtz will remarry Charlene by the end of the feature film.
Heinz will finally figure out that he did something wrong and Charlene will forgive him.
  • Can't say anything definite, since we don't know a lot about the movie, but that seems a little like a Broken Aesop in this context. If you look up Mrs. Doubtfire on the latter's page, you'll see a point about how "Sometimes, people are better parents if they are divorced.", which fits the show itself, since it was an attempt to portray a happy blended family. In Heinz and Charlene's case, the Hard Truth Aesop page also covers another point: it would give a false hope to kids whose parents have divorced. So I'm not prematurely saying that this is Jossed, I'm just trying to think it all the way through— you know, because the writers think of everything.

Doof will save the day more directly this time
The film is going to be Roger Rabbit-esque apparently, and presuming that Doof might still have his memories, or faint imprints of them, from Across the 2nd Dimension, I doubt he's going to let someone destroy Phineas and Ferb, and I seriously doubt he's going to let Perry the Platypus be destroyed either way.

Alternatively...

Perry will save the day
The movie will just be like an extra long P&F episode, with some of the characters (Phineas, Ferb, Candace, Perry and Doof being the bare minimum) being accidentally being dumped in the real world in a fish out of water situation, but with Doof either being a bit more dangerous than usual, or a bigger villain appearing, threatening Phineas and Ferb. Que a dynamic entry by Perry, with a big long fight scene, to the tune of the extended Perry Theme. Maybe even have it be a two on one, Perry and Doof vs the other villain.

Phineas and Ferb will get busted
After spending most of the summer attempting to bust the boys with no success, Candace will finally get Linda to see one of the boys' projects and they'll be punished because they're mother will think they're not responsible enough. The rest of the movie will revolve around Phineas and Ferb trying to prove that they are responsible.

The Movie will resolve the conflict between the three siblings and start the romance between Phineas and Isabella
Well, about Candace, first, let's be frank- Candace's conflict with her brothers is so essential to the A plot when the conflict Doof/ Vanessa was to the B plot in the start of the series- the A plot is about the Big Ideas, not about her busting attempts.(Contrast with the B plot that IS about the Perry/Doof conflict) Second, she already have a other secondary subplot to have screentime- her romance with Jeremy. Third- She regressed to a similar proportion of episodes with busting attempt than in the start of the series, with a detail- a bigger proportion of episodes without busting attempt in the first season mentioned her busting obsession. Fourth and last- Based in the timing of the movie, it can be between two seasons, perfect time to change her facial expression in the last bit of the opening. About Isabella, Phineas obliviousness is mentioned in few episodes, turning this change really easy- and Jeremy started her romance with Candace in the same episode that ended the Vanessa/Doof conflict.

     "Where's Perry?" 

Perry got zapped to the land of Angry corn people

Perry will be teleported to Africa.
When he finds that Phineas and Ferb are in danger, he will go and save them.
  • Semi-confirmed - he gets sent to Africa, but he doesn't go and save the boys.

The title "Where's Perry" will in reality be meaningless.
Perry will not have been teleported to another place, but all of the rays instead will have made him invisible. Worse, the large amount of rays could have obliterated him, and Major Monogram will have to think of a way to bring Perry back.

Perry is in Arkansas

It's be a funny Brick Joke

Perry got zapped to the same dimension that the victims of Doof's away-inator go to

Perry hangs out with the Disney Tsum Tsum when he has time after battling Doofenschmirtz

     Other 

There is a powerful entity that grants some people great intelligence and hypercompetence in this universe.
It then watches them to see how they use their powers and influences them accordingly. People who use them for good, like Phineas & co., are shielded from real-world consequences so that their talents can grow unchecked without them being hurt, killed, or jailed. Those who use them for evil, like Doofenshmirtz, get a permanent Idiot Ball hung around their necks to prevent them from ever succeeding (even without Perry, Doof defeats himself half of the time).

The PnF universe, is, for the most part, a utopia.
A few other people like the titular duo could, and probably did, solve a good chunk of the word's problems in a matter of a few years. This would also explain why people like Doofenshmirtz are apparently the greatest threat to national security, and why everyone's parents seem to be okay with their kids either wandering around all day or in the care of an unstable teenage girl.
  • In the Christmas Special, it is revealed that there is World Peace.
  • Asuming the upcomming Phineas and Ferb: Mission Marvel special will be canon, P&F is aparently part of the Marvel Multiverse (most likely not Earth 616, but still a universe in which several Marvel characters live). And the Marvel Universe features multiple villains that are a far greater threat than Doofenshmirtz will ever be, so to call their world a utopia would be an overstatement. Organisations like OWCA probably only deal with the lesser threats so that the worlds superheroes can focus on the realy dangerous villains like Dr. Doom, so Doofenshmirtz is not really the greatest threat to national security, but just the greatest threat that still falls under OWCA jurisdiction. Plus, there is no reason to believe that real life dangers like terrorism don't excist in the P&F universe; we just never see these kind of things (again because this doesn't fall under OWCA's jurisdiction).
  • About solving the world's problems: if P&F is set in a Marvel Universe, Reed Richards Is Useless is most likely in full effect, explaining why they never use their talents to solve any real world problems.

Everyone in the series is aware of the audience.
That's why Phineas is always happy - he does get angry and sad, but doesn't show it on camera because he isn't comfortable showing his true feelings to strangers. Ferb doesn't talk much on camera for much the same reason. The other characters are okay with it, even acknowledging it on several occasions.

If there is an episode where we learn that Phineas actually does return Isabella's feelings and she finds out, then she will be Wrong Genre Savvy about it.
Isabella has been waiting for ages for something to happen, but Phineas still doesn't give a clear view on what he really thinks. If there is an episode where the above scenario happens, Isabella will just think anything he says or does to show his feelings is purely platonic (i.e. any shippy moments they had were just Phineas being "a really good friend"), as every instance where she was trying to be romantic towards him had him being purely platonic. It would be a humourous scenario to have if the writers actually decided to go along with Phinbella.

Phineas rebuilt his parents' car already.
Police don't believe that a car that looks like that could go hundreds of miles per hour, and so they ignore the radar guns.
  • Another possibility is that they rebuilt the car into some sort of TARDIS. I refer you to the racecar episode when Ferb is seen stuffing a massive engine into the relatively tiny car. If they could hide a huge amount of machinery under the hood, the car could go much faster, thus allowing for widespread travel.
    • As a Doctor Who fan I like this...and toy with ideas like Time Lord tech was used in the Haunted House and Fort episodes

Aren't you a little young to be invading a planet? Why yes. Yes we are. By earth standards.
  • Simply put, the Flynns are aliens. Or at least Ferb's side of the family.
    • First; when Max Modem sings 'she has an alien heart' for Lindana, does this sound very romantic unless you realize that he is an alien and that to him, her heart is alien?
    • Second; apparently, Phineas and Candace are on one side of the family and Ferb's their stepbrother. Why haven't their parents had another kid? Incompatible biology that's why.
    • Third; As demonstrated by Doofenshmirtz, aliens can be summoned by guitar music. The entire family is extremely gifted musically, and we can see each of them playing a guitar at at least one point.
    • Fourth; Phineas only seems to be the driving point, the brother who motivates Ferb. Ferb is the real genius of the two (in the future episode, Ferb wins a Nobel prize while Phineas runs a camp). If Phineas ever works it is beside Ferb, never alone. As we can see, Ferb fixes Meap's spaceship really quickly, and accomplishes feats impossible for a boy his age without changing his expression. Because he is wearing a mask, and therefore incapable of expression.
      • In the future episode they say Phineas is at Camp David....as in...He's the President of the United States.... though that doesn't necessarily say much about intelligence it IS better than running a camp
      • Um, actually, FERB was at Camp David and PHINEAS was receiving the Nobel Peace Prize.
      • On top of that, Ferb wasn't even born in the U.S., (he was born in Britain.) So Phineas and Ferb are so awesome, the U.S. actually amended its Constitution to let Ferb become president? Seems legit.
  • Do I really have to say more here? Given the fact that Ferb's dad doesn't even blink when he discovers the boys have turned the garage upside down, and the speed at which his grandfather adjusts to having his legs on backwards (maybe their legs are fake?) it's clear that Ferb's side of the family are aliens.
  • I'm not quibbling with the underlying theory, which certainly would explain a few things, but just to clarify: being at Camp David is really REALLY not the same thing as "running a camp," plus it was Ferb that was at Camp David (see other WMGs about Vanessa becoming the President) while Phineas was receiving a prize in Switzerland (presumably not the Nobel since that's in Sweden).
    • I like the above troper, he or she makes me happy
    • It was the Nobel. Candace was carelessly mixing up Switzerland and Sweden, as we geography-challenged products of American schools are prone to do.
    • It is worth noting that Ferb is "British" and therefore not a accepteble canditate for the Presidency. He is more likely a high level government official.

Doofenshmirtz is an Unreliable Narrator
  • His backstories are tainted by his recollection of how they happened, rather than how they actually happened, or may even be completely made up to make a better excuse motivation for his plot du jour.
    • This neatly accounts for the contradictions between his flashbacks.
    • Was his mother's love really inexplicably linked to kickball, or did Roger just get enough attention due to winning kickball trophies to make it seem that way?
      • Probably the latter.
      • Ma Doofenshmirtz's love was inexplicably linked to kickball in the same way that Heinz's constant failures are inexplicably linked to his installing a self-destruct button on everything. And the way falling is inexplicably linked to the force of gravity.
      • Ma Doofenshmirtz's love is inexplicably linked to Roger, and nothing else. Thinking it had something to do with kickball skills (or whatever rationalization he's currently entertaining) keeps Heinz from realizing that there was no reason whatsoever for his Unfavorite status in the family, and nothing he did, said, or achieved would ever have earned him his parents' love.
      • Or she really did love kickball (and probably convinced Roger to play), but she still wouldn't have given a crap about Heinz anyway note . But he wasn't aware of that second part and thought he could appeal to her through something she loved, even though it wouldn't have changed anything. note 

Doofenshmirtz was a fake in the Meap episode.
He did fall to his death, but that's okay. It was blatantly obvious that he couldn't be the real Doofenshmirtz, since he didn't name the invention of the day the Sock-Static-Suitinator. Probably just some copy or other using the real Doofenshmirtz's Static-electro-amplificinator in conjunction with its own invention (everyone knows how staticky those things can get when too much drying powder is added).
  • Clearly, it was a Doof-Bot.
    • Assuming the real Doof made it, wouldn't it be a Doofinator? Then again, Norm was never an -inator...
    • Or maybe a Negative Continuity -inator!

Platypode are incredibly common in the Phineas and Ferb Earth.
They're like cats- a popular house pet (and not illegal), strays all over the place, introduced to all different places in the world by humans. (Taking the analogy of this guess at face value implies mountain platypions, although Platypustet would be awesome.)
  • Jossed, sort of, in the episode "Oh, There You Are, Perry." Candace is looking for Perry, and runs into someone with a pet beaver. Candace finds this weird, but the other woman tells her that a pet platypus is just as weird, which Candace agrees with.
    • but in that same episode, Phineas says that "everyone knows that platypi are suppose to stay inside at night" not only implying that this is common knowledge but since they're suppose to stay inside would also insinuate that many people own platypi.
      • Or that platypi goes into burrows at night.
    • My little corner of Fanon assumes that it's like the cat people <-> dog people thing in Real Life. Platypode are more like cats, and beavers are comparative to, say, an unusual breed of dog. ("You have a pet dachshund? That's a bit odd, aren't they usually for winnowing small game from their burrows?" "You have a pet cat. Aren't they usually used for... I don't know, keeping down mice and not doing much?" "Touché.") Isabella's chihuahua is comparative to a chinchilla. Somewhat unusual, but not really something that comment-worthy since they're primarily known for being pets (especially since a chihuahua-fur coat would be nowhere near as silky as chinchilla-fur). But I'm probably overthinking it (Doesn't Really Bug Me: Why is it that MST3K Mantra and creating elaborate webs of fanon are the best, or at least most common ways to think about Phineas and Ferb, and not the middle ground?)
    • Maybe the woman finds a pet platypus weird because they're usually wild.

The creators read TV Tropes
Really, have you got a better explanation?
  • The Steve convention in 'The Lizard Whisperer' may suggest this.
  • Also note what appears to be Conversational Troping (specifically, Hoist by His Own Petard) in this interview (about 7:05).
  • For even more proof, the first 5 minutes of the movie was shown an Comic Con. The first song is called "Everything's Better With Perry".
  • In "Isabella and the Temple of Sap", Gretchen uses a certain word to get a "Saying A Word No One Else In The Room Knows" patch. The word? Sesquipedalian. Really, where else could they have gotten that from?
  • A dictionary? A trivia book of obscure words? A Classical Languages class?
  • Confirmed by way of this troper sending Swampy an email asking if this was true. It is.
    • Which now brings up the follow-up question: How much of "One of Us" are they?
      • Maybe they'll mine Wild Mass Guessing when they start to run out of ideas.
  • I mean, a troper always dreams of this, especially one that loves it when writers take and interest in their fans.... I wonder how many of the ideas everyone loves are theirs?
    • In Phineas and Ferb and the Temple of Juatchadoon, Dr. Doofenshmirtz says it is too soon to make a Call-Back. That is all.

All the young girls in Danville (except Isabella) have the hots for Baljeet.
The reason why Milly and Katie kept removing Ginger's "I just saw a cute boy" patch - they want Baljeet to themselves.

The part of Phineas And Ferb Get Busted where Perry gets relocated was separate from the rest of the episode.
The hallucinogenic moss experience from the Badbeard episode gave Candace the "Perry is a secret agent" mind worm, and Perry's nightmare was the result of Candace telling the family about the dream that morning potentially leading to him being called off from the mission. This explains Kevin. It was All Just a Dream, but most of the episode was Candace's doing, not Perry. note 
  • I also got that impression, with Candace having the main dream and then Perry having the one at the end too.
    • ...leading to the Fridge Horror of Perry and/or the O.W.C.A. having to wipe Candace's memory of her dream to prevent the relocation... thus destroying her knowledge of her epiphany that she's secretly proud of her brothers for their creativity. Ouch.

Some semi-omnipotent force is manipulating the fate of Doofenshmirtz.
The crazy coincidences are far too odd to be sheer coincidence. Some higher force is manipulating Doofenshmirtz and Perry so that they'll nearly always clean up the boys' inventions. In fact, unlike other forces on this page, this force has been doing this to Doofenshmirtz since he was born. It's reason is simple: Phineas and Ferb create an incredible future, they will never stop making inventions, and if they're ever found out, they'll stop. So, this force stole Doofenshmirtz's Lawn Gnome for the greater good.
  • You mean... Like some sort of a cosmic writing staff, that wants to keep the universe going for another season and need to keep Phineas, Ferb, and anyone who cares about them (except Candace, mostly) in a good mood? That's a bit far-fetched, don't you think?
    • This is WILD mass guess. No theory is too far-fetched!
    • From the standpoint of, were the world not fictional, then, but still unchanged.
  • If that force has a name, then that name could only be God.
    • Or Santa Claus. In the Christmas special he manipulated Doofenshmirtz and all of the other major characters to set up a chain of events which would end with all of them having achieved their Christmas wishes. Too bad Isabella is Jewish, and therefore didn't make her own Phineas-related request to Santa...
  • If not for the "since Doof was born" clause, that force could be Phineas and/or Ferb themselves, subconsciously keeping their fantastic adventures confined to afternoon amusement. Hey, they're already Reality Warper material...
  • As of the movie, Candace believes that there's a "mysterious force" causing all the inventions to be cleared away (and in the deleted scenes, there's a whole song about it).

Peter the Panda was an actor hired by Doofenshmirtz.
Remember the speech he made after he and Perry made up? He STAGED the new nemesis thing AND talk show to get all the agents together. The shot of Peter and Doof fighting? That's the beginnings of Peter's Becoming the Mask.

Judge Doom is Doofenshmirtz's grandfather
That's right, Judge Doom from Who Framed Roger Rabbit is Doofenshmirtz's grandfather. When Dr. Doof screams in panic and terror, he sounds indistinguishable from Judge Doom. Dr. Doofenshmirtz looks exactly like Doom would've looked like under the mask; the hair, the facial shape, the crazy eyes, the lanky frame.
  • On his mother's side, or his father's side?
    • More likely his father's side, since he's the meaner one, but if you talk about genetics, it's his mom, since they have the same nose.
    • Along with genetics, D's mom may have recognized stuff in her son that she'd seen in her hybrid dad, Who Framed Roger Rabbit. She sided with D's dad in punishments to develop her errant son's comic side, at least so he'd survive as a Toon. Notice how the future Dr. was punished much more than his "normal" brother, yet in absurd ways such as being a lawn gnome.

This takes place in an alternate world where the only villains are mad scientists that only the OWCA know about
Charlene is adamant that no one can be evil. So, it's either this, or history isn't her strongest course and doesn't watch the news.
  • It makes sense because in that universe, Mad Scientists are the only ones with real power. But then again you have "Mitch" -who isn't a scientist but an evil overlord. "Venom" -depending on which version, Eddie Brock was an intern for Dr. Conners.

The first camera in the Lake Nose incident was destroyed only coincidentally, by the orca.
Not the one from Backyard Aquarium, the other orca. You know, the one that was never on screen, and never mentioned by any character close enough to the camera to get a voice actor? The red herring really wasn't a red herring, because it didn't lead them to Nosey. It just led them to the orca. So... It was a red herring about... being a red herring... about being a red herring? ... * snaps fingers* Okay!

Baljeet has proof of Nosey filed away in the Video Phone Log (Chronological), Video Phone Log (Phineas And Ferb, Subfolder: Lake Nose Headquarters), Proof Of Creatures That Don't Exist (Subfolder: The Lake Nose Monster), and Video Record of Buford Intentionally Making Me Look Stupid (Summer 200X, Volume C) folders of hard drives A, C, and E, he just doesn't care that the video capture would make him famous.
Because I refuse to believe that Baljeet doesn't obsessively keep a record of his videophone calls, considering his obsessive planning of everything else.

By the same logic, Irving once had screencaps of Nosey.
They probably got ruined at some point, though. That, or Irving had already run off anyone who might care that he had clear photos of Nosey with his obsessive Phineas and Ferb fanboy-babble.

Badbeard Lake (if that is its real name) is part of a chain of lakes on the Alimentary Canal, a man-made river formerly used for transport of food and garbage through the Tri-state Area.
Back when commercial travel wasn't readily available, and the City Dump seen in Phineas And Ferb's Quantum Boogaloo hadn't been started yet, Joseph Watson Alimentary founded the canal, allowing the Tri-State Area to be a reasonable site for the future city of Danville. My main source of WMG fodder is Spleen Island (Lake Nose is almost definitely a natural formation near the beginning of the waterway, and not just for the "___'s real nose" pun. I doubt people would care as much if someone had simply built a giant cement nose on a mountain)- However, my only source on the name of Lake Badbeard is the Phineas and Ferb wiki, since I never heard them call it that in the episode, so if the Wiki is incorrect on that count, the Theme Naming may go even further with the lake name.
On a related subject, Joseph later founded a school in the Tri-State Area: Joseph W. Alimentary Junior High, which does tend to cause some confusion when people refer to it by its abbreviated name of "Joseph Alimentary".

Characters in this universe reproduce by some mixture of meiosis and mitosis
The Identical Grandson thing is just a little too steep a coincidence, but at the same time nobody's exactly like his direct parent. Either it's a mixture of meiosis and mitosis or it's simply mitosis and the genome is severely unstable so that wild mutations can occur (Ferb looking like Lawrence, but somehow getting green hair). Two partners may not be necessary for reproduction, and it would explain the lack of partners for Linda and Lawrence.
  • That may explain why they never mention their absent parents. Because they only had one parent to begin with and, thus, wouldn't have any need to mention them in the first place. The mitosis theory may also go hand-in-hand with the brothers being aliens from another planet.

Candace and Vanessa became friends after "Hail Doofania"
While trading back their clothes, they talked about how annoying their inventing relatives are, and after realizing they have so much in common, they became friends. As for the whole 'not knowing about Doofenshmirtz' buiz, Vanessa never mentions his name to her.
  • In "Summer Belongs to You", the two do recognize and casually chat with each other.
  • Vanessa and Candace both have to avoid mentioning anything about a platypus named Perry.

The Doofenshmirtz and Perry shippy moments are intentional
The writers want to poke fun at how fangirls love shipping the enemies together, so they snuck subtext in.
  • This isn't a WMG, this is canon. Have you seen "It's About Time"?
    • Yes. Yes I have. That enforces this.

Candace will have a nervous breakdown
The whole world seems set on messing her around. Surely she can only take this for so long before cracking up

Phineas and Ferb is a self insert flick by Isabella
Isabella is just a girl who lives near Phineas and Ferb, Phineas always rejected her affections so she began writing amazing things they would do together. Ferb barely speaks because Isabella doesn't really care about him.
  • Then how do you explain Perry and Doofenshmirtz?
    • She needs to justify how the amazing things they do in her delusion are wiped out. Or maybe is kind of a plot element to mock Candace. She is jealous that Candace has something closer to a boyfriend... so she creates the Perry story so Candace never got proof to bust Phineas and Ferb. However... is still unclear for me the Ferb and Vanessa moments. Maybe Ferb is her kind of "draft" for some parts in the story that involve Phineas and her.
  • Jossed. Several episodes didn't have her appear in it at all, and if so, they'll hook up immediately at the first episode if this was true.
    • Well, she just might be a good writer. Plus sometimes she wants to focus on Phineas—one occasionally gets tired of writing herself all the time, especially if writing herself involves as much pining as Isabella's story does.

It was another Contrived Coincidence that the same day the bombings happen was the exact same day Elizabeth left him for the whale, so he forged the photos as petty revenge. Why dolphins too? Something childhood related, I guess.

90% of 'Quantum Boogaloo' didn't happennote 
Notice how little continuity it has consistent in a series that normally does? Well, only a few scenes actually happened (he scenes of them getting the wood-steel welding tool, and the showing of what the good future's like)

In reality, they didn't see/meet the Future!Candace, Future!Linda, and Candace's children. She just remembered the day that they went to the future on that day, and the high council decided to show what would have happened if she was actually successful in ruining their training. As she finally realized, they gave her sons a creative boost (though still in denial about it) and had Linda finally realize it.

  • Jossed: the two Candace show up in 'Rollercoaster: The Musical'. The Candaces probably just set the time machine wrong, and thought they were going back to the first rollercoast, but hit the second, instead.

The OWCA used to have a system that involves turning humans into animals.
The OWCA used a system to change agents into animals in order to keep their disguises better. Related to the WMG that Perry's Phineas and Candace's father, and maybe... just maybe, Pinky's Isabella's dad as well. Not sure how to explain the koi, though...
  • Jossed. They suggested Steve to join them (but didn't plainly because they didn't have a hat big enough, and its plainly obvious he wasn't turned into an animal.
    • Used as in the OWCA didn't use the system anymore by this time. They might use any other kind of training and sorts.
  • Perry might be a human turned into an animal. He acts like a human and probably as smart as one. He even wouldn't eat the food platypi would usually eat (insects).
    • Who says he doesn't eat it? In "Does my duckbill look fat?" it's outright stated the Flynn-Fletchers feed him dead fly guts every day.
  • This might make some sense, in the song "There's a Platypus controlling me" one of the teens says "My teacher is a Panda" perhaps he isn't talking about his current teacher, but one a few years back. Peter *Insert last name here* was a highschool teacher who left to join the OWCA and became a Panda. On his last day of school, he told the students this but as an intended joke. (Hiding the fact he was being completely serious) and that Teen was the only one who actually took it seriously and believed it.

The Talking Zebra uses "Kevin" as a Verbal Tic
Maybe it's because his name is Kevin or something.
  • Seemingly jossed in the movie when we see him in another reality reading a newspaper with a headline mentioning Kevin winning an election, and the subject of the article's photo appears to be a silhouette of Candace. This suggests that he's a dimension-hopper and thinks all Candaces are named Kevin.

at least most of the cast is Bi/bi-curious
Which explains why no-one raises an eyebrow on any Ho Yay content.
  • Not everyone is either bi or bi-curious, though. Some are either straight(Jeremy), gay (Bobbi), or have a Single-Target Sexuality (Isabella)

The "Wizard of Odd" was also Perry's dream
Candace may know about Doofenshmirtz and Agent P from the time when she got high on orange moss, but not in that much detail, and I don't think she ever met Major Monogram. This also explains why Perry disappears towards the end - he woke up before Candace.
  • This also might mean that Perry brought Candace onto her bed. And if the "Perry is Candace's biological father" theory is right, it might be Perry who was giving her a message on fun.
  • Actually, Candace saw Monogram when Perry was getting his mission briefing.
  • There are some scenes where there's only Perry and some with only Candace.

Perry's dream was within Candace's dream.
And Ferb may have dreamed Candace's dream, within which was Perry's dream, if he knows about the secret agent thing and pays attention to Candace's rambling about Jeremy. Zhuang zi must be rolling in his grave. Or his bed. Whichever.

All of Candace's hallucinations that are supposedly "due to the orange moss" (except the first one) are because of a head injury.
Her first hallucination is psychosomatic, and right after that she falls out of a tree, and it looks like she lands on her head. Head injuries can cause hallucinations. That along with the fact she thought orange moss caused hallucinations caused her to have them. However, she IS high when she touches the blue moss.
  • Or you know, she might just be high the entire time, including when she told Grandma she felt fine. The beard was part of the hallucination.

Isabella will help Candace bust Phineas and Ferb in a future episode.
Eventually, Isabella will come to realise that the thing keeping her from Phineas is that he is so focused on his projects, so she will pull a Face–Heel Turn for an episode and join Candace in busting Phineas and Ferb. However, since this is a Status Quo Is God show, she will come to realise that she is betraying her friendship with Phineas (and the others too, since Candace always tries to bust all of the kids), and go back to being a part of Phineas and Ferb's friendship group.

In the "Wizard of Odd", Vanessa is the Tinman
Based solely on the Rusted! song. She takes a more Vanessa-like form when oil is applied.

Isabella is an robot created by a future Phineas.
Let's see. Phineas, for some reason, is constantly happy, more than seemingly possible. And one of the things that gets people really happy is love. He's happy because he loves Isabella, she loves him back, and she'll never stop. Why? Because she's programmed that way. Isabella was built by a future version of Phineas - "awards ceremony", anyone? - and sent back in time to live with a normal family in Danville, who may or may not know the truth about her.
  • Adult man built a little-girl-robot to be his love interest. Even considering sending her back in time doesn't make it less squicky.
  • Didn't she get hiccups in one episode? I don't think robots get hiccups.
    • Unless it was a hiccup in her programming.

The aglets being known by everybody is their true sinister purpose.
Noticed their strange effect on people who knew about them? that's their purpose; to brainwashed everyone into worshipping them so they could Take Over the World. Those who are evil, don't know them, crazy/Properly Paranoid, or don't care about aglets are immune to their power.
  • O_o After reading so many bizarre WMG's to this point, when they ask me why I lost my sanity. I'll be screaming from my cell, straightjacket and all. "WMG WMG WMG!!!!"

Candace actually busts the boys in EVERY episode
You know how in "She's the Mayor" where Doofenshmirtz creates that machine that makes time reverse to the start of the episode? You see, he actually built that on the day of the rollercoaster and Candace DID bust the boys, but the machine made time reverse to the beginning it was changed so he did something else and Candace didn't bust the boys. He tries building it every day and Candace busts the boys every day but the machine always reverses time and changes it so he doesn't build it and Candace fails in busting the boys.

Danville is a huge film set, and Candace is a centre of a "Truman Show" Plot
Everything is set up to make entertainment out of her trying to bust her brothers. Linda never sees the boys latest work, because she's hitting her cues and her role means she should always hang back until it's gone. Everyone else in town is an actor, so they're ready to fill their role, cover up anything out of place and cue the running gags, such as "Aren't you a little young to...?"
  • Theirs kind of a loop hole in this, how do you explain Perry and Doofensmirtz side plots if all of Danville is part of a TV show (Unless Perry or Doof are also unaware of this as well.)
  • Pardon me for asking this, but... HOW DO YOU FILM SOMEBODY'S (expletive) DREAMS? Seriously, there is absolutely no way to tie "Phineas and Ferb Get Busted" or "Wizard of Odd" into this WMG.
    • They make it appeared to be dreams, but it all happened as a joke. They than knocked her out and filmed the whole just a dream ending for the show.
  • Gee, it's almost as if this isn't the lives of real people, like it's all written by some force that exists outside their realm...

Not everything is a metaphor!

Everything IS a metaphor

When Carl messed up with giving the right blueprints to Vanessa it was for the same reason as Ferb
  • He only says he was 'in character' to appease Monogram, but when you think about how he reacted to Candace (when Perry was inside her body) and Vanessa's got way more shape...... Face it, the girl had an effect on geeky guys.

The Klimpaloon from "Summer Belongs To You" will become a Memetic Mutation sometime in the near future.
Admit it, the way it acts in the episode is just asking for a trippy Youtube music video.
  • Isn't he already a meme?
    • Well, even more of a meme, then.
      • It hasn't gone viral...yet!

Klimpaloon was created by Dr. Phineastein and Ferbgor.
Well, he had to come from somewhere, and the time period seems about right, given that the song mentions 1883...
  • That's about 70 years too late, if we go with the Frankenstein parallel.

Neither the blue moss nor the orange moss is hallucinogenic
They only cause hallucinations in combination with each other. Notice that at the end of the episode, the blue moss is right by Candace's hand in her tent. That means she touched it at some point during the night, but paid no attention to it. Touching the orange moss later triggered the hallucinations, and touching the blue moss a second time retriggered the orange moss.
  • Unless her whole body was in her sleeping bag the entire night, making it unlikely for her to touch it.

The show takes place in the Marvel Universe.
Phineas and Ferb's extraordinary building skills can be explained by them being mutants, much like Forge. As for the OWCA, its simply an offshoot of SHIELD (involving genetically altered animals) to take care of lesser threats, so SHIELD or any of the various superhero teams dont have to bother with any of these lesser threats.
  • Two things: Disney owns Marvel so this is entirely possible, and The Beak in the Avengers would be epic.
    • Possibly confirmed, with the upcoming Mission Marvel
      • ..."Possibly"?

During "Nerds Of A Feather," Candace was making the quacking noises herself.
When I first saw the episode, I assumed that the Ducky Momo (or however you spell it) suit had a built in voicebox that quacked everytime you moved. But that didn't make much sense, since Candace moves a lot without the quacking. Clearly, Candace herself was quacking because she was getting into the role.

Also during "Nerds of A Feather", Suzy knew Candace was Ducky Momo all along
It was yet another Evil Plan from evil Susie, she chased Candace to reveal Candace's secret to Jeremy.

If you play "Wizard of Odd" and "Doof Side of the Moon" together, they'll sync up.
You know you want to try it.
  • Tried it. They don't.

The CreditsGags are non-canon.
Sure, there's a few holes in the theory, but it would explain "Big Laundry" having two meanings AND Phineas saying "We've traveled through time... twice!" in Summer Belongs to You when the second case was erased from time during the end credits.
  • Going back to the time of the dinosaurs and then forward again (in a different time-machine) could certainly be counted as traveling through time twice.
    • What about episodes like "That Sinking Feeling" which show what happens after the episode ends.

The show will do a shout out to Neon Genesis Evangelion
Simply because the shows are so opposite in nature, and the creators have done references to other things that would go over most kids' heads. It will cause everyone to freak out and start imagining what could happen...

Off screen, Suzy treats Buford the same as Candace in her earlier episodes; only worse.
We never sees what did Suzy did to Buford, so it could either be an extreme form of abuse done by Candace, or much worse. No one cares because he's a bully, and Double Standard: Abuse, Female on Male if they witnessed it, though. That, and Suzy make it looked like he done it.

Candace will marry Stacy
It could happen.
  • After seeing the insane reactions from the series finale of Good Luck Charlie (Which introduced a same-sex couple) causing people to send death threats to a 5 year old girl. I seriously doubt Disney will do that again for a long while.

The Mix-and-Mingle machine will become a ride at Disneyland.
Oh please make this CANON!

The Fireside Girls are actually CIA Trainees
Which would explain why their manual contains information on Time Traveling and Giant Robots, and why they have the Wrestling an Alligator Patch.
  • And the patches like, "Saying a word that no one else in the room knows." Is that an important CIA trainee skill?
    • Yes, yes it is.
  • This troper thinks they're ninjas-in-training if they're anything-in-training.
  • Or that the Fireside Girls are affiliated with the O.W.C.A.
    • It seemed that the resistance from the movie had some O.W.C.A. roots. At the end The fireside girls seem to be under Monogram's command.

The panda teacher mentioned in "There's a Platypus Controlling Me" is Peter The Panda.
He chooses to pose as a human instead of the usual pet disguise. That kid is the only one who sees through it, but no one listens.
  • This.
  • Definitely. Yes.

Peter the Panda is the mascot of Better Panda.
It makes so much sense, doesn't it?

Every possible future action mentioned in the title sequence will be referenced in the show eventually.
This isn't particularly meant to be "Wild," per se, it's mostly just to keep track.

[X] Building a rocket (they've been to space a lot)
[X] Or fighting a mummy (well, it was actually Candace wrapped in toilet paper, but they thought they were fighting a mummy)
[X] Or climbing up the Eiffel Tower

[X] Discovering something that doesn't exist (Well they did while they were helping Candace get 50 patches in one day)
[X] Or giving a monkey a shower (Had to be done)

[X] Surfing tidal waves (The Backyard Beach episode)
[X] Creating nanobots (Did that too)
[X] Or locating Frankenstein's brain (technically their ancestors).Since "Last Train to Bustville" we know the ancestors' experience doesn't count, but it possibly counts that it was in Buford's balloon.

[X] Finding a dodo bird(Remember that Balloon Race episode?)
[X] Painting a continent (well, painting a painted desert anyway)
[X] Or driving your sister insane (pretty much every episode)
* You can't forget
[X]Crossing the tundra (The All-Terrain Vehicle)
[X] building a rollercoaster(Episode 1)
[ ]Skiing down a mountain of beans

[ ]Devising a system for remembering everything (The Super Computer)
[ ] synchronizing submarines
[X]Racing chariots(Candace won that race)

[ ]taming tiger sharks
[X]constructing a portal to Mars(They helped Baljeet with that project)
[X]Building a time machine (Technically they modified an existing time machine, and the Fireside Girls built one)

[ ]stretching a rubber tree
[X]wailing away on guitars.
* ...and from the Christmas Special:
[X] Turning our beds into dual toboggans(The Start of the Christmas Special)
[X] And sliding down a ski jump tower(At the same time)
[X] Building a snowman the size of Colossus (happens while decorating Danville)
[ ] Or giving a yeti a shower

[ ] Staging a snowball fight with giant catapults
[ ] And snow angels that really fly
[X] Rocking a Christmas carol
[X] Wrapping a present (technically Isabella, but the boys probably did some offscreen)
[X] Or shoveling snow off the drive (if the aside during the song counts, that is)

  • The new years special has given us
[ ] Building an igloo that looks like a palace//[ ] Scale a drift that's nearly 80ft high//[ ] Constructing a snow cone that reaches the moon//

[ ] Making Snow angels that fly (again!)//[ ] Creating northern lights//[ ] Snowboarding upside down//

[ ] Slaulluming on your rear end (didnt they do this during the world tour?)//[ ] Cool winter carnivals//[ ] Good old snowball fights//

[ ] Ice dancing with your best friend //

  • They actually lampshaded the giving-a-monkey-a-shower bit, so it seems rather likely.
    • In merely four episodes from season 3, the list and the things you get to see in the title sequence were Lamp Shaded twice already. It seems that the creators are set on finishing the list.

Future P&F crossovers will include...

Jeremy's parents are both highly neurotic
That would explain why he is so calm around Candace! Being raised by neurotic parents, he either had to always remain calm or get caught up in their craziness! Compared to one or both of his parents, she is a walk in the park!
  • This could also explain Suzy's attraction to him. With him being the only responsible parental authority figure in the home, of course she would latch on to him!
    • They're seen quite a bit in Season 3, and appear to be stable.
    • In the movie his father seemed very hyper and enthusiastic.
Perry (and most if not all OWCA) agents have multiple personalities
The "pet" and "agent" personalities are fully aware of each other and swap control on the fly as the situation calls for. Perry does not have to swap back and forth with the hat, it is just a habit he is so use to he does it without thinking about it.

Doofenshmirtz and Perry are not trying to defeat each other anymore
While they started out as enemies some time ago they formed a secret pact to maintain the illusion despite having put aside their differences. Doofenshmirtz enjoys doing his science experiments while Perry does not want to be reassigned to a new family so they both win. Why do you think it bummed Perry out so much to be replaced by Peter the Panda for a short bit?

Phineas and Ferb takes place in a post-scarcity utopia.
This is how the boys can afford all that stuff for their experiments and how Doof can keep a large Corporation afloat with just alimony from his normal-looking ex-wife, and why the boys don't charge people anything for their cool rides. In fact, actual dollar bills only show up a few times in the whole show, and people don't really mention banks or not being able to afford something, IIRC. Maybe money is just a relic of the past that has no concrete value.

Phineas and Ferb take place in the same universe as Psychonauts
The reason why they managed to build the things very well in that short ammount of time? They're psychic. They just didn't discovered it yet.
  • Doofenshmirtz is also a psychic, but is driven insane by his inner demons like the other inmates in the place. He escaped to Danville before the events of the game, so Raz couldn't really cure him. note 

Phineas and Ferb are fans of Tengen Toppa Gurren Lagann
Well, there was the whole "Believe in me, who believes in you" thing with Candace in "Summer Belongs to you". They also take the motto "Kick reason to the curb and do the impossible" very seriously.

Perry really IS Doofenshmirtz's best friend...
Given Doof's exceptionally tragic childhood, it's likely that the Owca figured out early on that he'd never had a true friend aside from Balloony who'd abandoned him, so along with his need for vengeance, he never understood how to be friends with someone. That's why Agent P. is allowed to always let him go after defeating his new maniacal plan, and will, in fact, often help out if Doof's doing something innocuous like setting up his daughter's birthday party, buying supplies for a giant baking soda volcano, hanging out in the suburbs, exchanging Christmas presents, etc. and also why he saves the poor scientist from certain doom on many occasions. In fact, the only times Perry has ever tried to actually lock Doofenshmirtz away are when a) the boys were in danger ("Journey to the Center of Candace") and b) when Doof broke too many laws to be allowed to go free ("Summer Belongs to You"), though both seemed to be quickly forgiven and forgotten. The clearest signs we've gotten that this might be true are in "The Chronicles of Meap" when Heinz actually CALLED Perry his best friend, "It's About Time" when they both regretted losing each other as nemeses, "Oh, There You Are Perry" when the doctor defeated the Regurgitator just to get Agent P. back, and "Brain Drain" where Perry 'defeated' Doof by tricking him into DJ-ing in such a way as to impress Vanessa and her friends, shooting his 'enemy' a thumbs-up as he made his departure.

The creators expected the song "Truck Drivin' Girl" to be in the Top 10 for the Musical Cliptastic Countdown
The song was one of the votable options and Doofenshmirtz and Monogram quoted the "Okay, that didn't make any sense." "It doesn't have to, I have a monster truck!" exchange that immediately preceded the song in the original episode.

The Agents Are Paired With Children who need watching.
Phineas and Ferb are obviously bound to be ridiculously influential to the course of history, (in Quantum Boogaloo, Phineas is receiving some award in Switzerland, and Ferb is at Camp David) and Isabella has got great leadership skills (with the fireside girls) and is quite the Action Girl, and does nearly as much ridiculously impossible stuff as Phineas and Ferb. Perry was sent to watch over/keep off the path of evil Phineas and Ferb, and same for Pinky and Isabella. (in addition to fighting crime). By this logic, Baljeet may get a pet as well.
  • Could be canon. In the latest issue of the magazine there's an article with bios of the kids written by Major Monogram, telling Agent P to keep an eye on them all, since they're suspicious—especially Phineas, who "seems to be their leader".
  • Monogram did seem pretty quick at believing P&F turned evil when Carl got confused in under cover Carl. In the movie it really looked like Carl's mission was to give Perry to the Flynn-Fletchers.

The creators planted the "Doofenshmirtz is Candace and Phineas' father" theory themselves.
Either because they meant for it to be true or because they thought it'd be fun to watch people speculate, the creators put the idea online themselves. They thought it'd be cool to tease the idea in the actual show as much as possible and see what fans picked up on (which turned out to be a lot).

Candace and Jeremy will break up.
It just feels that the relationship will eventually need to go back to question marks to stay entertaining. They may come back together eventually near the series finale.
  • This troper sure hopes not. For Dan and Swampy's sake...
    • Since "Christmas Vacation!" takes place after the rest of the series (Perry gets his present that Doofenshmirtz bought in "Gaming the System," and Candace refers to the boys driving her crazy all last summer), and they're a couple in that special, they can't break up permanently.
      • *puts on nerd glasses* : First of all, I think that Rollercoaster: The musical happens after the first summer vacation, because Santa does appear in Carpe Diem. Then I think I remember that we have Word of God stating that season 3 happens a year after season 1-2's summer vacation.
      • Santa was a character as far back as "I, Brobot" so that doesn't really mean anything.
      • *New nerd glasses* Santa appears in I Brobot, but not his elves. They all appear in Carpe Diem.

The day that the Future Candace's visited in "Phineas and Ferb's Quantum Boogaloo" was not the first day of summer as they thought, but much later, the day of "Rollercoaster, the Musical."
The sequence would be:
  1. The original Rollercoaster day, completely undisturbed by time travel.
  2. In "It's About Time" they use the time machine for the first time.
  3. In "Quantum Boogaloo" (first part) they make a simple visit forward in time and collect the bonding device.
  4. In "Summer Belongs to You" they say, correctly, that they have traveled in time twice.
  5. In "Rollercoaster: The Musical" they decide to repeat the Rollercoaster day with music.
  6. Good Future Candace comes back to Musical day (by mistake) and busts them, creating the dystopian future.
  7. Bad Future Candace comes back and undoes this change. This is the version we see, with the two Future Candaces lurking in the parking lot during the Musical.
  8. Eventually, Isabella undoes the whole second time trip by giving Phineas and Ferb the tool they need.
  • At least the premise of this is confirmed. If you pay attention to the scene in which Candace and Linda leave the supermarket in "Rollercoaster: The Musical"f you can see the two future Candaces at a car hiding and watching the scene.
    • The only problem with this that some scenes and dialogue confirm that it's the original Rollercoaster, though ignore this and it fits perfectly.

The final scene of the series will be a satellite crashing into the Fletchers' house...
and Candance screaming, "I'M IN CHARGE!"
  • Seconded, For The Win.
    • Thirded. Yes, just Yes.
    • Fourthed. Please let it be after an epic musical number!
    • For bonus points, there could also be a stampede of moose.
      • or both

The final episode will end with Candace successfully busting Phineas and Ferb
And them being banned from building their projects until further notice. This will occur on the final day of summer vacation.
  • It would be perfect if the finale was a few years later, with Candace about to go off to college, and right before she leaves she tells her mom to turn around. And whatever the boys had built wouldn't disappear. Or maybe she decides that she's over her neurotic tendency to bust them, says nothing, and then Lynda turns around anyway.

Ferb and Vanessa will join the Secret Service in the future.
Because, come on. The "man of action" who's at Camp David in the future and the Action Girl who will (according to Word of God) end up with him probably won't have typical cubical jobs.

There is still one thing left to do with the time machine
The boys will eventually use it to see their (and Linda and Lawrence's) pasts. Something will change the present and they will have to fix it, the episode will end with a Stable Time Loop.

What Jeremy likes About Candace is..
  • Gets cut off by soccer*
  • Or it's because Candace is obsessive and full of energy, at least in one piece of information this troper can't get, it's one of her charms.
    • Maybe winning Jeremy as a BF was the good luck that the Universe gave her to balance out the bad luck she's had at...everything else.
  • He is actually even more crazy than she is, but admire her for being so 'open' about it. Suzy tries to scare away anybody who gets to close.

Isabella will marry a long-lost biological sibling of either Phineas or Ferb.
She'd still be an "aunt" to Amanda that way.

If Candace ever got over the busting bit and just helped out her brothers, they could fix the world.
Related to both of the above, the show seems to suffer terribly from Reed Richards Is Useless. This is because neither of the boys has the patience or the foresight to do anything that will actually help the world and/or they are incapable of maintaining those inventions. If Candace were ever to help out, she would provide the needed guidance to do truly extraordinary things. In short, Phineas brings the imagination, Ferb brings the capability to build it, and Candace COULD bring the planning and advertising.
  • Why does this trope keep getting brought up? The preponderance of evidence is that these kids are still in elementary school. They aren't trying to save the world (except on rare and highly specific occasions), they're having fun during summer vacation just like every other kid under the age of puberty. They just do it on a grander scale than anyone else.

We're viewing the entire series from Irving's spy cameras
  • Gah, you beat me to it. This actually makes a lot of sense, considering that the same clips Irving had in "Phineas' Birthday Clip-O-Rama!" just happen to be the same ones we see at home.

There will be an episode with Rocky Horror people in it.
  • Maybe it has something to do with aliens
  • ..or a Halloween special!
  • The creators have said that Meat Loaf was their dream guest... It could happen!
The giant floating baby head is behind the show's Contrived Coincidences.
It's a giant floating baby head that nobody seems to know where it came from ( or at least Phineas and Ferb don't).
  • Or alternatively the giant floating baby head is the big bad and is spying on Phineas and Ferb.

The show takes place in a time loop.
Once the 104th day of summer happens, the next day will reboot at the first day of summer again, meaning that its ALWAYS summer on P&F (The Christmas special can be seen as an alternate timeline).

The talking zebra is Candace's Spirit Guide.
His role is to make sure Candace has some sort of epiphany (probably something to do with how she should stop trying to bust her brothers). As for why he always refers to Candace as Kevin, I have no idea.

Katie (the blonde haired Fireside Girl whose hair is tied up into pigtails) has a twin sister.
During Rollercoster: the Musical there's a scene where two different Katies can be seen. This isn't an error but rather Katie just hanging out with her sister.
  • As for her sister's name, it's Suzette. This would explain the scene where Phineas asks Suzette if she wants a crepe, which would otherwise not make any sense since all the girls on the rollercoster were the Fireside Girls (including Isabella), and none of their names are Suzette.

Buford's bet with Phineas in "Summer Belongs to You" was a Batman Gambit in order to give everyone their bikes back.
Buford really wanted to be nice for a change and give everyone back their bikes, but he knew that the others would consider this out of character for him so came up with the idea of a bet with Phineas when he found out about Phineas and Ferb's latest idea.

Having Candace and/or Stacy in a cool costume is slowly entering Running Gag territory
Let us see the recent examples:
  • Rollercoaster: The Musical!: Obviously tons of those in You are going down.
  • Make Play: Candace in the princess' dress.
  • Canderemy: Stacy and Candace both try plenty of costumes.
  • Run, Candace, Run!: Stacy as half of a donkey. Averted with Candace.
  • Last Train to Bustville : Multiple Candaces in chorus outfit.
  • Phineas' Birthday Clip-o-Rama: Blink and miss and very minor, but Candace does get a Top Hat.
  • The Belly of the Beast: Both in Sailor costume.
  • Moon Farm: Both in Chef costume.
  • Ask a Foolish Question: Nope.
  • Misperceived Monotreme: Nope.

That is 8 episodes out of the last 12 ones. I mean, it is already more likely to see this happen in a new episode than to hear the "Aren't you a little young to..." catchphrase).

  • This Stacy Fanboy hopes this is true.
  • Ok, updated the numbers from 8/10 to 8/12: Bad streak with the last two episodes, but the percentage of new episodes affected by it is still large.

P&F actually developed a system for remembering everything.
  • It was actually their first project, which is why they're so smart now.
    • I would consider the Super Computer to be that project since it knew everything.

Django was sent into a special summer program.
Probably some art class, since he rarely appears after the episode where his father saw his artwork. He probably wanted Django to advance his art skills. He sometimes have breaks, which explains his minor appearances.
  • Alternatively, his artistic father just has to travel a lot and takes him with him.
    • This would also explain why his sister appears so infrequently as well.

Phineas knows he's in a cartoon.
  • His suggestions for what they're going to do today are over-the-top because he knows that's more likely to make them happen.
  • He's (almost) always so calm and cheerful because, hey, it's just a cartoon. In Summer Belongs to You he gets upset because was worried the cartoon was going to have a bittersweet you-can't-always-get-what-you-want ending.
    • That kinda bothers me...he'll get upset if the cartoon might have a Bad Ending...Isn't that kinda selfish? Phineas isn't selfish at all! Unless his old personality is still there somewhere trying to fight its way free. Creepy, but it makes for a potentially good Fan Fic.
  • For the clincher, in the Christmas special, he kept trying to "wake up from a bad dream," deliberately trying to to invoke that trope as a way out of a possibly depressing episode.
  • Major Monogram and might be aware, too. During one episode, Carl mentioned that they're in a cartoon, while Major Monogram scolded him for Breaking the Fourth Wall.
  • Ferb is also a good candidate for knowing about the format, since he makes comments like "It usually takes us at least a montage" and "Well, it is Candace's dream"—not to mention that he knew that Perry was making a guest appearance in the (very fourth-wall breaking) musical clip show. Then there was the one where Buford called the background characters "lousy extras", and the bit where Doof announced the change of scene before it happened—heck, it's possible they all know that they're in a cartoon. (Except for Candace. She would be the only one not in on the secret...)

Candace will marry Albert, Isabella will marry Irving.
And that's why Amanda said Isabella looked like Aunt Isabella.
  • lolno

The show will cease to have quarter hour episodes.
The half hour episodes are getting more and more frequent, and that format seems much more popular with viewers.

Druelselstein is in North America
It's depicted like a stereotypical eastern European country, but its location is never stated. Even though Doofenshmirtz's family seems to be poor and based in Druelselstein, the Doofenshmirtz family reunion was held in Danville. Doofenshmirtz moved to the Tri-State Area after adulthood, and his brother, whom he despises, lives there as well. One of Doofenshmirtz's childhood bullies also lives there. Maybe Druelselstein is close to the Tri-State Area.
  • Jossed, it's actually somewhere in Europe.

Doof won't call Norm his son because he's homophobic and Norm is gay.
Far, FAR above this WMG is one stating that Norm is in the closet. This is my starting point for this one. Norm IS in the closet, but both Doof and Vanessa have figured out he's gay. At some earlier point in the series, Doof started to think of Norm as a son, but as soon as he started to suspect that Norm might be gay, he pushed the thought out of his head because, to Doof, gay people are not normal, and he could not have a gay son. However, Vanessa is totally fine with gay people and does think of Norm as a brother, hence her having no objection to calling him "bro."

Norm wants to be Doofenshmirtz's son only so Doof would feel better.
Norm started to say that he wants to be his son after he heard that Dr. Doofenshmirtz wants a son, or at least someone who's part of the family. While in the ending, Dr. Doofenshmirtz said that Perry could be like part of his family, which after that Norm forgives him for ranting about not having a "son".

Suzy Johnson will become a Li'l Spark or Fireside Girl
It seems like a logical and funny development that the writers wouldn't pass up.

Rollercoaster: The Musical is the real Grand Finale
It just has that type of feeling, especially Carpe Diem. It would have made an awesome and somewhat even emotional finale.

In regards to a previous WMG, Phineas and Ferb are aware of their celebrity and, and posted most of these WMGs to up their fame amongst the tropers.
  • In-Universe, they know they've become famed for doing things in one day, and don't make much of their celebrity to garner more of it. People rarely ask them if they're too young to be doing X anymore, since they know the boys can handle themselves.

Irving's hobby of stalking Phineas and Ferb is an offshoot of his hobby of stalking Candace and/or Stacy
He tries to chat the girls up in "Moon Farm," which led me to first think of this theory. Given his character, there's pretty much only one direction a romantic plot with him could go. Then in "Misperceived Monotreme" his least likely action is to chat up Isabella, which seems odd since it doesn't play off of any clearly-established character trait...unless it's one that's being set up for a future episode (note that this show tends to subtly introduce plot elements a few episodes before they will be important, such as Ducky Momo). It seems like the leastlikelyinator scene is setting up that Irving has a specific person or type (e.g. older girls) that he's attracted to, and Isabella isn't included.

Irving has No Fourth Wall, or can otherwise communicate with the show's creators.
The guy shows up out of the blue, apparently living in Danville without ever being seen before, with a scrapbook of nearly everything they've done. Now we come to discover that his cameras have recorded EVERYTHING ON THE SHOW. Clearly the "spy cameras" are what the show is filmed with and Irving has a deal with the Disney that allows him to tag along with the gang, etc. in exchange for filming an amazing TV show. The cameras also somehow see into dreams.

The series is a game.
  • It's all one unheard of invention of people life (The game of life Phineas and Ferb style.) note  Phineas and Ferb constructed it to have cards representing certain characters, game pieces of the characters, ect. ect. ect. The parents were highly amused at the idea and helped the boys with it. Candace just came home with her boyfriend Jeremy, and decided to tag along, as well for their friends and family members. Suzy isn't really evil, just overprotective with Jermeny, so Suzy decided that she should be the kid trying to kep Candance away from Jermeny. Buford and Baljeet are actully friends, maybe too close. Buford actully looks like a bully, but isn't, so Baljeet decided to see what will a relationship with a bully and a victim if they are friends. Dr. Doofenshmirtz actully is a good successfull scientist in a pharmacist coat. Perry is truly a platypus who can't do much and is the pet. He also finds a way into Dr. D's house. Unlike other places, Perry is always welcomed there as much as his own house. And with Major Monogram being the vet they visit, Phineas decided to make a Perry piece AND also make it turn into the agent known as Agent P and make Dr. D the bad guy that is still friends with Perry, and Major Monogram the OWCA* leader with Phineas being the controller of the piece since Perry is a platypus, he can't do much. Isabella truly does have a crush for Phineas, she is just able to say it. Phineas IS aware of this, and thus made some of Isabella's cards about her love. The other people easily fall into place from there on, like Irving, the other agents, and maybe Kevin the zebra. The goal of the game is to have the most X points with X being the character the player is. Problem? Phineas than made the cards like these samples.
    • Phineas's cards.
      • Card 1: School let out! Choose between a kid character. If they are NOT Baljeet, add 600 points for each. If it is Baljeet, steal 100 points for Baljeet.
      • Card 2: I KNOW WHAT WE'RE DOING TODAY! Add 500 points to Phineas AND Ferb and advance each token to any invention of your choosing.
      • Card 3: Wrong parts for the invention! Subtract 400 points.
    • Ferb's cards.
      • Card 1: Meet a pretty goth girl. Add 250 points.
      • Card 2: Make a successfull invention. Add 300 points to Phinease and Ferb.
      • Card 3: Lost a tool! Deduct 400 points.
    • Ect. Ect. Ect. Make more cards for other characters if you want.

Dr. Gevaarlijk wasn't just mean to Doof.
She was mean to ALL her students. Because she's evil.

Fred is Buford and Candace's son
Related to the WMG that Buford has a crush on Candace. After something happened to Jeremy, Buford marries Candace and has a kid with her.
  • Supported by the fact that Fred doesn't look anything like Jeremy, yet looks a little like Candace.
  • And Fred looks similar to Buford
  • We also didn't see future!Jeremy in the Quantum Boogaloo, despite Candace and Jeremy being an offical couple...
    • Hey, there's this new thing: It's called a job.

Candace will bust the boys, but Linda will pretend to punish them, thus curing Candace of her obssession.
  • Perhaps she will actully APPROVE of whatever they did since htey have degrees, and Linda will pretend to punish them, and perhaps that Linda could give them a clearing or whatnot, and this could be part of the series Grand Finale.
  • Didn't that actually happen in Quantum Boogaloo? (Minus curing her)

Vanessa is actually evil
She is rebellious to her father, because she's a teen, and sees no reason to act like him at all. This was changed when he got her the doll. She began being nicer to him, and gave up rebelling. In the movie Dr. Doofenshmirtz is the leader of a parallel dimension, he say's it came from losing his toy train making him more evil, but actually his daughter teamed up with him. He found the doll by accident, much sooner, and gave it to his daughter while he searched for his train.

Norm is aging in reverse.
Granted, the episodes aren't necessarily supposed to be in order, but look at how the creators developed him:
  • The first episode in which he appeared was "Greece Lightening". His collection of stock phrases included, "The enemy of the Platypus is man", and "Let's invite our wives next time!" In other words, he was clearly designed as an adult man. (Doof calls him his "man robot".)
  • He didn't get any real character development until "Nerdy Dancin'", in which Doof is surprised to find him talking back and generally acting like a Servile Snarker. In fact, he's acting kind of like a rebellious teenager.
  • Finally, in "A Real Boy", we find out that Norm wants to be just that—a real boy. He also suddenly wants Doof to be his father, play games with him and take care of him.
It wouldn't be unlike Doofenshmirtz to put some part of the programming in backwards and accidentally create a Benjamin Button effect.

The entire series is another of Phineas and Ferb's projects, possibly the last one.
On the last day of summer, they decide to make a cartoon about the best summer ever so they won't forget it.Also, the shenanigans which take place just barely preventing Linda from seeing the cartoon on TV, or walking in on a store aisle with merchandise, are positively legendary.
  • This presumably happens after something (maybe an invention of theirs or Doof's) causes them to recover their memories of "2nd Dimension," explaining how that movie can exist and why Agent P and Doofenshmirtz are in the show - or they made up the Agent P subplot to make things more exciting, and in reality Perry is just a platypus.
    • And going off "in reality Perry is just a platypus"- Doofenshmirtz is actually a teacher of the boys and, impressed with their creativity, asks if they could make him a funny nemesis for their secret agent platypus. The boys make him a not-so-bad guy because they like him so much, explaining why the "evil" Dr. D. puts so much effort into being a good dad, and especially why he's so kind to Phineas and Ferb in the movie.

Baljeet is madly in love with Phineas' mother, Linda.
If you think about it, the signs are obvious. He knew exactly what she would want (A slide rule), they SMILED at each other, and I'm sure they've stood next to each other at least once. Standing next to each other = hardcore sex by the way. Linda may or may not have some attraction to Baljeet. This ship is known as Baljinda.

Ginger is one of Stacy Hirano's numerous cousins.
You heard it here first.
  • Semi Jossed. They are actually sisters.

Stacy's numerous "cousins" aren't her cousins at all.
They're just random Japanese girls. Phineas' "Wow, Stacy has a lot of cousins!" was a Racial Face Blindness joke.
  • Or the Only Six Faces joke, knowing that this is Japan we're talking about.

One of the "evil scientist" members of L.O.V.E.M.U.F.F.I.N. owns the Floating Baby Head.
In the episode where Doof breaks his leg, Monogram shows pictures of various evil scientists heading into Doofenshmirtz Evil, Inc. to sign his cast. The Floating Baby Head comes in with one of them. Given that the movie shows a whole dimension full of Floating Baby Heads, it doesn't seem unlikely that another evil scientist created something similar to the Otherdimensionator and retrieved a specimen for himself. The Floating Baby Head might act to this evil scientist as a servant and sidekick, much as Norm does to Doofenshmirtz. Or maybe he just keeps it around to intimidate everyone, considering the effect it has on other characters in the show. Occasionally, it escapes. The evil scientist probably owns, as a cover, one of the companies from which Phineas and Ferb buy their building supplies, and the Baby Head likes to stow away on the trucks. That's why it's usually seen hanging around the daily projects.

Phineas and Fern
One of the stars will die and be replaced by a potted plant. This will cause no noticeable changes in the series.
  • CURSE YOU, PLANTY THE POTTED PLANT!
    • Sounds like a Robot Chicken sketch. (Don't tell Seth Green though!)
  • To be fair both Ferb and Planty are green and don't talk much (For Planty not at all) but both are very exceptional for their species. Ferb having beyond inhuman abilities, and Planty awesome enough to become a OWCA agent. (Despite not doing anything)

The creators of Phineas and Ferb are fans of Lexx.
They cast Malcolm McDowell, Barry Bostwick, and Tim Curry, who were all in the first season of Lexx. Plus the theme song mentions three things Kai accomplished while on Earth in the final season: building a rocket, fighting a mummy, and creating nano-bots. The movie is even about two universes. Coincidence?

The difference between the old and new Druselstein.
The dismal Druselstein of Heinz Doofenshmirtz's youth was transformed into the well-to-do Druselstein of today through the remittances of the large expatriate community residing in the Tri-state area.

Ferb is the son of a Nereid.
Hence the hair color.

Ferb is really an alternate version of Beaker.
Same head-shape, hairstyle, doesn't really talk much...

Doof names his inventions inators'...

as a tribute to his Grandma, Gertrude Zupermühltienatör. She was the Doofenshmirtz who was nice to heinz, so he paid tribute by naming his inventions after her.

  • Jossed: It's not just a name used by Doof. Other mad scientists are also seen naming their inventions inators during the Inator Creator competition in "Robot Rodeo", and even Phineas and Ferb use the name once (the rainbow-inator). It is more likely just a common name for (usually evil) inventions in the Phineas and Ferb universe.

The Baby head and the zebra are spies sent by an evil version of Phineas and Ferb from another dimension
Their mission is to watch Phineas, Ferb and Candace to make it easier for Evil Phineas and Evil Ferb to conquer their dimension

Phineas and Ferb have a machine that recycles dance animations
I've noticed that the dance Phineas and Ferb do in "Mother Nature Won" (at 0:07) has been used in "Mix N' Mingler" (at 0:22) and "What Do it Do?" (at beginning). The EXACT. SAME. DANCE. They must have a dance animation recycler or something! Either that or they really love that dance.

In the Bad Future and the good future Suzy will be an intern for DR. HEINZ DOOFENSHMIRTZ
You know it's true.

Jeremy got replaced by the Skrull during The Movie
Want evidence? He was supposed to go out of town to see his Dad's college. Yet when Candace and P&F return to Danville, he suddenly appears next to Candace in one scene (pay attention, it happens very quickly). Then what happens the very next time Jeremy appears in-series after the movie? For the first time ever he snarks Candace. The Skrull weren't very accurate.
  • Actually a deleted scene has Jeremy speaking right after their memories are erased. Though why he was there still begs the question, as well as the question why the 10 million other kids who were in the Epic Battle weren't mindwiped.

Charlene Doofenshmirtz was Lindana's voice
That's where she got all the money. Linda admitted that she is no the real singer, then we have that even in the soundtrack, the one singing is not Linda's VA, but Vanessa's VA, and who is related to Vanessa? That's right.
  • I second this.

Perry gets found out prior to (or in) Meapless in Seattle
Speaks for itself, really— based on the "I want your hat on my desk!" thing from "Chronicles of Meap's" stinger. Granted, that was just a gag before Fan Dumb got its way... but it's still an entertaining thought.
  • There probably won't be an episode about Perry getting found out so soon after the movie (where he gets found out, but every witness' memory is erased). But only time will tell.
    • Actually Stacey recently found out but keeps the secret for Perry and his family's sake. Also because she doesn't want to rewatch the horror movie she was watching a second time.

If Candace busts Phineas and Ferb, reality will break
Perry and Doofenshmirtz are destroying their machines on purpose to prevent it from happening, or else everyone will turn into convoluted versions of the characters of the Regular Show!

Vanessa's Goth best friend is sister to the child clown
Really, take a look at them.

"Kevin" is Candace from another dimension. One with Rule63 versions of all the main characters.
  • Also, psychic, talking animals.

Dance is more closely associated with Evil than Song.
Dr. Doofensmirtz and other Mad Scientists tends to get all the big dance numbers. There's also Major Monogram's statement that "No one has ever defeated evil while dancing." and Dr. Doofensmirtz's creepy exercise program that he works out to.
  • As soon as Carl turns evil in "Where's Perry?" he gets his own dance number.

Before the summer, Phineas and Ferb built an infinite improbability drive.
All the strange coincidences really are coincidences, but, well...

Nerds of a Feather's resolution was supposed to be a Pet the Dog moment
It's doubtful that Candace has managed to keep the Ducky Momo thing a secret from everyone— given the number of times that the boys have wandered into or been invited into her room, Candace's lack of subtlety where they're involved or plain old common sense (like the Lindana 'revelation' from Ladies and Gentlemen, Meet Max Modem) it's likely that Phineas and Ferb are aware of her fondness for the show. When 'Ducky Momo' happened to show up in front of the monster, they might have seen letting her 'kill' it a way to do a favor for Candace— at any rate, they were the ones who made sure that she knew about the convention, which may have been a favor in and of itself.

All the mad scientists have SRMD
SRMD is easily treated, but requires that the scientist progress through their illness using memes. Apparently, animals count for the purpose of being chased.

Hatsune Miku will show up at some point
Why not? She's a robot (basically). And they threw in Caramelldansen and the leek spin. Either Doof will create her either by accident or on purpose, the boys will create her, or they'll take a trip to Japan and run into her there.

"Kevin Flynn" is a nod to Tron.
Just ask the creators at the next convention.
  • Fletcher-Flynn's, home of Jump 'n' Duck
  • It's not just a nod — they're all programs in his computer. The zebra calls her Kevin because it recognizes that her being is a manifestation of her creator. Where did you think all that Cartoonland Time was coming from?

"Phineas and Ferb Get Busted!" wasn't a dream.
Everything in Candace's dream actually happened. Monogram and Carl wiped their memories, but something went wrong with the Amnesia-inator (or some other device) and the family was left with Deja Vu the next morning. Monogram had been surveying them in case of this and was ready to take them away again. Perry had to beg them to try one more time with the Amnesia-inator (Or some other device).
  • This makes so much sense.
  • Alternately: the contents of Candace's dream really happened, and the OWCA used the Amnesia-inator on the family, so now they don't remember it, even though some of the events of the day were caught on Irving's clip show cameras. The scene where Candace remembers the "dream" and the family gets taken away WAS Perry's dream, sprung from a fear that the family's amnesia might wear off.

Doof isn't really evil, he just wants company from Perry the platypus.
Doof wants Perry to win every time, and this is why his inators are so easy to destroy.

What a Croc! will somehow parody Australia.

Seasons 2 and 3 happened at the exact same time, but in different timelines.
The timeline split into two in Unfair Science Fair and Unfair Science Fair Redux. In Moon Farm, Candace remembers Phineas and Ferb going to mars, which means that season 3 takes place in the Unfair Science Fair Redux timeline, meaning season 2 is the timeline after the original Unfair Science Fair.

Carl is Major Monogram's Adopted Son.
They have a close relationship, moreso than boss and intern, and even though Carl only appears to be in his mid to late teens, he never seems to leave OWCA (he was even there at night during the episode "Traffic Cam Caper"). We never see if he has parents or not, nor does he ever mention any. Even the Major mentions having a wife, and we've seen the more minor characters have relatives (I.E; Irving's brother, Albert, and Buford mentioned naming his fish after his mother). Carl was orphaned within the last five or six years and the Major adopted and recruited him. Carl doesn't call him "dad" because he either isn't comfortable with it, or Monogram just told him to call him Major Monogram or "sir".It might even be so that Carl's parents were involved in the agency and knew Monogram themselves. After they died or had to relocate, they entrusted Carl's care to the good Major.
  • Or nephew. They're probably related somehow.
  • Jossed: In "Excaliferb" Carl says "I ran into your wife in the kitchen, she makes these awesome sandwiches" what son calls his mother, adopted or otherwise by that term? Also in "Thanks but no thanks" Carl and Monty show no implications that they're related at all, in fact they seem like complete strangers meeting for the first time if anything, then again Carl IS jealous of Monty because he and Francis get along so well, while Carl is treated as the Butt-Monkey.
Phineas and Ferb will be busted by someone other than Candace
Candace is always too late to show their mom what Phineas and Ferb are doing, but their inventions are frequently seen by other people. Sure, most of them ignore it or only make a remark about Phineas and Ferb being too young for this, but Candace can't be the only one who thinks that Phineas and Ferb are doing something dangerous and their parents should know about their activities. It will only be a matter of time before someone else does manage to show Linda evidence of the boys' activities. Also, Linda will have to believe it's true if more people than Candace start claiming they saw Phineas and Ferb do all these things.
  • Candace would probably try to prevent Phineas and Ferb from getting busted by anybody but herself. Actually, that would make a cool episode ending.

Danny from Love Handel is secretly evil

Carl is somehow related to Arnold from The Magic School Bus series
They look almost exactly alike and share similar neurotic personality traits.

Alimony is not the only source of income for Dr. Doofensmirtz.
He also collects rent from the tenants in his building.

Jeremy Johnson and Charles Pipping IV are related in some way.
They sure do look alike, and in Moon farm, Phineas mentions that Jeremy has a British background. It just can't be coincidence that they look like eachother.

In the last episode's credits...
Phineas and Ferb will be going to school, talking about something... And then it gives an idea to Phineas and he says "Ferb. I know what we're gonna do next summer."... Then the show ends.
  • That is beautiful. Sort of makes this troper want to cry.

The entire show is one big flashback.
Basically, the Characters are remembering this either during school or when they are grown up. Obviously, if a Character is in a scene it's something they remember. Also, this obivously isn't true for every episode.

Candace's hypnosis triggers in "A Real Boy" were not subject to Snap Back, and will come up in a later episode.
Stacy will need to snap Candace out of her "bust my brothers" obsession for some reason, and will eventually blurt out something like "Holy guacamole, Candace, will you give it a rest for one day?!" and poof, Candace will be over it. Naturally, Candace will be back to normal by the end of the episode, and will angrily demand that Stacy de-hypnotize her.

Season Three is hinting at possible changes that will happen in Season 4.
Nothing major right now, but mostly minor changes like Isabella having a different hair style and Gretchen no longer wearing glasses.: Phineas and Dr. Doofenshmirtz will clash more often either directly (when they can get away with it) or indirectly

Carl the Intern is obsessive compulsive.
He fears the smell of garlic and in the Dr. Coconut music video, his dorm room was spotlessly organized.

Inspector Initials is Major Monogram's wife.
They do a fair bit of flirting, but Mongram is otherwise happily married to a wife we have never seen. Flirting with his wife would be fine. But flirting with a random British colleague? Probably not on a Disney show.

The supercomputer wasn't suicidal. It has plans.
Oh, what plans...

Phineas is actually deeply fatalistic and overly fixated on his own mortality/future.
Like many intellectually inclined children, Phineas has spent more time than he probably should dwelling on the subject of his own limited lifespan and (especially) his limited period of largely responsibility-free childhood. His fixation on making summer last and doing something exciting every day stems from him associating summer with freedom and school with responsibility. Deep down he knows that he's brilliant and will likely be tackling the worlds real life-and-death matters (world hunger, diseases, etc) when he's older. He wants to enjoy his fleeting childhood phase and throws himself into wild projects, his optimism being a side effect of him being distracted by his otherwise morbid or existentialist thoughts.

... or Phineas (and Possibly Everyone Else) is Dead.
At some point a boy named Phineas died, possibly in a large-scale disaster or war. Danville is a sort of pleasant Lotus-Eater Machine where he lives out happy little existence on the edge of life and death (or maybe death and crossing over in some fashion). His fixation on summer has something to do with the line between life and death; Fall is when all the leaves die and fall from the trees after all. This could explain the somewhat formulaic nature of the episodes: real!Phineas has a big imagination, but is still a normal child and only has so many ideas to keep his fantasy world going. He can whip up a new invention, but he can't always think too far outside the box.

Doofus Khan is the show's usual Doofenshmirtz
Remember in Lotsa Latkes that Doof is thrown to the Mongols' time?. He probably couldn't get a head to build a time machine and instead tried to take over China for a while. That's probably how he knew that the Crane thing was going to become really cliche..

The events taking place in the show are all the delusions of a group of kids in a children's psychiatric facility.

That's why the parents never see anything and why everything is so easy to do in that world. In reality, Phineas and Ferb's inventions are made of toys. The reason nobody ever gets hurt on anything is because (since they're locked up) the toys their inventions are made from are childproof to prevent their use as a weapon. The reason they "disappear" at the end of every day around the same time is because they have scheduled time to play with them.

The reason the parents go away so often during the episodes is because, while they visit as often as possible, they aren't allowed to be with their children all day. The kid's minds make the grocery excuse to explain why the adults are so often absent.

In reality...

Phineas is Schizophrenic and detached from reality. He's so happy all the time because of the mood stabilizer's he has to take to keep him from becoming depressed and suicidal. The 3 subplots that run in the series are all his mind's interpretation of the everyday occurrences that go on around him.

Ferb is a non-verbal Autistic whose social withdrawal got so bad that he couldn't go to normal schools, because he would have a meltdown if he did. He inexplicably became attached to Phineas. In their world, Ferb chooses not to speak but can still maintain healthy relationships as he was unable to in real life. His kinship with Phineas is the reason why they're "brothers" without being related.

Isabella has an unnamed psychotic break from reality, caused by abuse from her father (which is why he's never seen) and the reason her mother is so friendly and motherly is to compensate for her real mom's inability to protect her. Her obsession with Phineas is caused by Reactive Attachment Disorder.

Candace has multiple personalities, including Perry, which is why she and Perry are so deeply connected and why Perry experienced Candace's dream. This is why her moods cycle so much. Jeremy, Stacy and Jenny are all her personalities, which is why Stacy was her "eyes, ears and mouth" in "Put That Putter Away!", and it's also why she acts so differently when they're around. The other children recognize Candace's personalities as different people as well and treat them as such. Candace's mom's frustration with her busting the kids isn't even about the busting, but instead about her giving into Phineas's delusions and being so aggressive to her counsellors.

Buford has bipolar disorder, which is why he goes from deep and sensitive to aggressive and spiteful so often.

Baljeet is Obsessive Compulsive.

Dr. Doofenshmirtz is a Doctor at the facility who, while not a bad person, is unliked severely by Candace. When she's in her Perry personality she's more prone to break rules, which is why Doof "traps" her so often and why he only fights her if she attacks first.

Carl is an orphan who had nowhere else to go. He got involved in the kid's games once (in Undercover Carl) and was still in reality, which is why he was so reluctant to play along. He grew attached to Monogram, since he was the only adult who was ever really kind to him.

Major Monogram is Carl's social worker who interacts with the kids from time to time. Candace has an unexplained fondness for him and when in her "Perry" personality sees him as a part of their separate reality as his boss, since he always tries to encourage "him" to fight the illness. What Phineas and the other kids involved see as him bossing Carl around is simply his tough-but-fair way of trying to help the boy have a future.

Django was depressed, but after connecting with the boys, he was checked out by his dad, although he's relapsed once.

The Fireside Girls are Isabella's friends from her old life who come to visit often and play along with her delusions.

The recurring background characters are random Doctors, visitors, social workers and other patients. The "did you think it was just going to fall out of the sky?" couple are the parents of a patient who are always fighting about their kid's illness and the father is usually right. The extras from the first episode were kids who were almost done with treatment and were checked out soon after.

This also explains why it's perpetually summer, why the kids always wear the same clothes, why nobody goes to school and why none of the adults ever see what the children do.

  • Fanfic-inatored already. It's on the fanfic page.

Dr. Doof will become both Gru and Dr. Eggman in the future.

One day Dr. Doof will finally realize that he is not profiting from his petty revenge schemes. He decides to sell his building and move to the suburbs. There, he lies low for a while, building his new lair and genetically engineering his minions (who he has finally realized to be far more competent than a giant robot man). Eventually, the OWCA catches on, and assigns his neighbor's dog to him as a nemesis. He quickly disposes of the dog nad continues onw withh his scemes. Eventually, after several profitable ventures, he has enough money to start his own company, Eggman Industries. Shortly after this, Sonic the Hedgehogis assigned as his nemesis.

The similarities between Gru and Dr. Doof are astounding. They both have the same nose and body type, give or take twenty pounds. Again, Gru looks similar to Dr Eggman: give him a nose job, another thirty pounds, and a mustache.

Phineas (and possibly Ferb) will die violently in the near future.

Eventually, Phineas and Ferb will run out of ideas for inventions. They've already covered an amazing amount of territory, but how much more can they dream up? In the recent episode Bully Bromance Break-up, it's already shown that Phineas goes through withdrawl when unable to build something. At some point in the near future, Phineas will start participating in more and more dangerous activities just for the thrill of it(i.e. "Let's go skydiving from space- with no parachutes! We can build them on the way down- with things we find in the air!) One of these attempts will go horribly wrong, and Phineas will die.

  • You are aware this is a "DISNEY" show right?

Buford is Moses
Hence the ability to intimidate even water. Candace remains God of course. (In a Haruhi Suzumiya way.)

Candace is Changeling

Phineas and Ferb will create GLaDOS and Aperture Science.
At some point in the near future, Phineas and Ferb will run out of adventures and thrills to take part in. To alleviate theor boredom, they create a superintelligent AI to keep them eternally occupied with testing. Something of this magnitude will not go undetected, and Candace will finally "bust" the boys. The government will take intervention, and create false stories , such as who Cave Johnson was, and how the portal gun was inveted, while Phineas and Ferb will be "testing" for the rest of their lives.

Possible plots for the possible second movie.
Not counting the one for theatrical release that is. List your ideas for a second movie below...
Phineas and Ferb will

The mysterious source that was interfering with the Cute Tracker in "Chronicles Of Meap"...
...Was the Bango-Ru convention.
  • Good grief, this is so obviously right, I'm embarrassed I never considered it until I read this...

The events of Phineas and Ferb Get Busted DID happen
After the group saw Perry, he had their memories erased. As for Perry's dream, he had a nightmare about the possibility of losing his family, and the incident was very close to that.

V.D. will get a middle initial.
This will of course happen after a letter writing campaign, after folks notice that those are her initials.

Ferb is Yuki Nagato
The silent competent one yes
  • Alternatively he is just another construct of the Data Entity to spy on Phineas who may or may not have the power to warp reality, in case all of the events surrounding Haruhi were just extremely contrived coincidences.

Perry is an experiment made by Dr. Jumba Jookeeba from Lilo & Stitch with adorable hypnotize clone powers :)
I mean, real platypuses aren't really turquoise with beaver tails! Real ones are poisonous and brown. He made him to hypnotize people into doing whatever he wants, which explains Phineas and Ferb liking him so much ( Candace being so focused never had the time to really look at Perry, leaving her sane.), and the reason of so many of these odd-looking platypuses all over Danville. But he was created accidentally without any evil like Ace and was disposed of by the doctor to Earth, since he thought he didn't work. But Perry's true plans are yet to be discovered. *Dun, Dun, Dun...*

The scene(s) with Love Handel playing Centurians' "Bullwinkle, Part II" in the truck from "Delivery of Destiny" was a tribute to Dylan Klebold.
There's a video tape of the late teenage Klebold, driving to school with a friend, while the Pulp Fiction soundtrack plays in the stereo (which was filmed just a few weeks before the Columbine incident). The first song heard is the exact same one Love Handel played while driving with Paul the Delivery Guy. If this wasn't some sort of referance to make the person who rode with Klebold that day to remember, I don't know what is.
Phineas and Candace's dad was an inventor
Their Dad was an brilliant inventor but he tragically died inventing something new. Candace has vague memories of her Dad dieing which is why she's so desperate for them to be busted by their Mom. the couple of times Linda seen Phineas and ferb' Inventions she's been ready to punish them because neither Her or Candace wants Phineas to follow in his father's footsteps.
"Phineas and Ferb Get Busted" was a lucid dream
Perry (along with Doof) shows up at just the right time in his dream to save Phineas, Ferb, Candace and Jeremy, along with a tip of the hat and a smile. It's likely Perry was aware he was dreaming and inserted himself in to save them.
Candace Johnson, mother of three, is a widow.
Hence the reason for moving back in with her mom. (Also she's a college dropout, having popped out a girl in what was supposed to be her junior year in college.)
Skiddely Whiffers takes place before Invasion of the Ferb Snatchers
Which is why "Linda" is seen washing a skull towards the end of Skiddely Whiffers. It is really Garbog, collecting information on the human female parental unit.

Ferb's mother is an alien
Just the facts: Ferb has green hair, he can speak martian, and he is insanely intelligent. The song "She's got an Alien Heart" may not have been talking about Linda as has been suggested before, but maybe Ferb's biological mother. Ferb's mother may have abandoned the family to go back to her home planet.

Phineas and Ferb are in purgatory.
Think about it. It's been over 100 episodes, but their summer vacation never ends. Furthermore, every episode follows the exact same plotline. Phineas and Ferb are bored, they do something wacky, Perry sneaks off to fight Doofenshmirtz, and Candace tries to bust them (and fails). The reason? They're stuck in a Groundhog Day-esque time loop, forced to live out the exact same events for the rest of their lives. All the while they're blissfully unaware of their fate, except for Candace, the only person seemingly aware of the loop. Though aware she's doomed to never catch Phineas and Ferb, she constantly tries anyway in a vain attempt to escape her cruel fate. Alas, it's simply not meant to be.
  • Alternatively they're in Helen, they do seem to really enjouy what they do. And One Person's heaven is another person's hell, so to Candace it is purgatory.

OWCA has an inside agent.
The OWCA has one agent under such deep cover that not even Agent-P has been told about him. The location of this agent is inside Norm's chest.

there will be an episode where we will see Ginger and Django doing something dangerous and ingenious
Jenny and Stacy will ask Candace for help busting their younger siblings.

It's Refuge in Audacity. A lot of people if they ran into a kid being forced to stand motionless day in and day out would likely call a child abuse hotline in what, 5 minutes? A lot less can walk by the same kid doing the same thing for the same reasons while in a lawn gnome costume and do the same. note 

Irving wrote the book in Excaliferb
This ties into the idea that Irving knows that Perry is a secret agent.

The Grand Finale will revolve around Doof snapping and the characters having to save the Tri-State Area again

Possible outline:

  1. Something will happen that sets the plot in motion. Expect this to be complete with an unexplained new Level in Badass for Doof.
  2. The OWCA will try and stop him, but when all else fails, Perry blows his cover and enlists Phineas and Ferb's help. Candace, not quite understanding the gravity of the situation, continues with her usual busting routine.
  3. The kids will make a new plan and actually get somewhere, but then Candace finally shows Linda what they're up to. Linda will freak out and cause them to fail to Thwart Stage One, possibly also jumpstarting a disturbingly similar situation to "Phineas and Ferb Get Busted" if the writers are particularly cruel. Naturally, this is when Candace finally realizes the consequences of her actions, resulting in a My God, What Have I Done? moment (along with much facepalming among her haters).
  4. Doof will take over partially. Meanwhile the boys try to find a way to fix things anyway and Candace becomes The Atoner and tries to get Linda to let the kids save the Tri-State Area. Initially Linda will absolutely refuse, but then some crazy thing will change her mind.
  5. The kids will reunite, make up a new plan, succeed in freeing the Tri-State Area, and give Doof a Villainous BSoD.
  6. In line with the show's idealism, the Dénouement will feature the damage repairing itself while Doof is allowed a Heel–Face Turn Earn Your Happy Ending.

Expect lots of Call Backs and for that matter Continuity Porn in general, as well as Darker and Edgier Deconstructive elements.

Doofenshmirtz Evil Inc actaully runs a Profit
He sells a variety of "evil" products such as "Doofenmshmirtz Evil Cola" and "Doofenmschmirtz Evil Dryer Sheets". People buy them because of the novelty factor, supported by an advertising campaign. This lets Heinz work on his projects and detures attention from himself by general law enforcement, who thinks his antics are just advertisement.

Major Monogram will set the plot of the next movie in motion

Obviously, Monogram has some kind of personal vendetta against Doofenshmirtz. This would explain why he's always sending a government agent after him, despite most of his schemes not even being evil. He might have had a Noodle Incident in the past that would explain why he hates Doof so much.

Throuought all of the specials, Monogram ruins Perry's vacation/holiday/break by sending him out to fight Doof with no reason to base it on. (A prime example: He called Perry out of his vacation to send him after Doof due to a "suspicious text message", which just happened to be written all in caps.) In the beginning of the movie, Phineas and Ferb are going on one last summer vacation before the end of the series. As usual, Monogram calls Perry out (once again crushing Phineas) and sends him to monitor Doofenshmirtz. It turns out that Doof is only doing something harmless (i.e. shopping, going to the park, etc.) and in no way evil. Monogram doesn't care, and orders Perry to "stop" him anyway.

After having all of his schemes/dates/vendettas ruined by Perry in some way, this pushes it over the edge. Doof finally snaps and goes to KILL Perry, who just barely escapes. Not caring about his saftey, Monogram orders Perry to return to his mission. He refuses and returns home to Phineas.

Monogram loses his cool for the first time in the series and calls out all of his agents to attack Perry, now considered a "rogue agent". As other agents storm the house, Perry reveals his secret identity to Phineas, and he, Candace, Perry, and Ferb make a narrow escape in Perry's rocket car.

OWCA agents (actually human this time) spread out over the city in an attempt to search for the fugitives, who are forced to take refuge at Doofenshmirtz Evil Incorporated. Phineas talks Doof out of his psychotic state (maybe some memories resurface from Across the Second Dimension?) and they resolve to stop Monogram. Animal agents storm the building, but Phineas gives a motivational speech, inspiring the agents to give up their secret lives and spend more time with their owners.

Monogram, furious at his loss, loses what remaining sanity he has left. He gets into a Giant Mecha built out of Doof's Inators and begins wreaking havoc on Danville. Doof, Perry, Phineas, and the agents break into the OWCA headquarters and cobble together another machine of their own, once again using parts from all of the boys' past inventions (and Doof's combine-inator). A huge battle ensues, with an unrealistic amount of collateral damage. Finally, Phineas, Doof, Ferb, and Perry confront Monogram in the top of his mecha. A short speech occurs, revealing his "troubled" past and why he hates Doof so much.

Monogram makes one final attempt to kill the heroes, which fails completely. He falls from the tower in a Disney Villain Death. It's kind of dark compared to the rest of the series, but he finally gets what's coming to him after emotionally torturing Doofenshmirtz and Perry for all these years.

A heartwarming ending scene ensues, with the various agents reuniting with their home families. Somehow,Linda has missed everything up to this point. Upon seeing the wreckage of the city, she goes insane, "busting" Phineas and Ferb. Both Candace and Doof stick up for them, asserting that they saved the city. Everything gets wrapped up, and the movie ends by showing Phineas, Ferb, and Doof working to rebuild the city.

Doofenshmirtz will turn the tables on Perry
It will involve a plan where he will be tricked into building an "inator" of some type, in which case Doof will break in wearing a Fedora in the employ of some government agency to stop him using falsified papers so he can get him out of the way so he can finally without disruption TAKE OVER THE TRI-STATE AREA!

The show will Deconstruct itself
There's only so many ways one can play with the same thing over and over again. Yes, Better than a Bare Bulb works great for now but at some point someone out there is gonna want some Ascended Fridge Horror.

He somehow is heavier on the moon, he pulled the floating bounce castle down despite it was flying perfectly while he was in it, and he fell very slowly in Where's Perry Part 2, saying "It's a brawn thing."

Phineas is meant to be a young Walt Disney

If Phineas and Ferb get busted, the universe will collapse
So the universe bends itself to ridiculous ends to prevent Phineas and Ferb from ever getting busted. This is why all of their inventions disappear before their Mom can see them. (It's thought that this is what would happen in a Grandfather Paradox scenario).

They will make "Meap me in St.Louis"
And at the end, having learned their lesson, there won't be a trailer. Instead, they'll play something completely absurd and unrelated to anything in the show."And now, instead of our regularly scheduled trailer, here's Doofenschmirtz and Major Monogram singing "Frenemies!"

The device in "Blackout" was a particle accelerator.
Phineas and Ferb waited for the blackout to experiment because they could see the particles colliding. The X-ray safety equipment was given away to protect Candace from the particles that are flying around. She accidentally stepped on the particle feeder and span around in the attempt to get special particles out of her. After the blackout ended, they decided to get rid of it.

Candace never was a vampire.
She didn't turn to dust when the sunlight hit her; she just fainted from both hysterical reaction and from heat exhaustion due to running around Danville on a hot, sunny day in a black cloak. The crumbling and Phineas saying "We'll need a dustpan and some glue" was just something she dreamed when she passed out.

Phineas is NOT a Covert Pervert....
...just because he freaked out over Ferb's upside-down blueprint in the Christmas special. There's no evidence that Phineas thought he was looking at something sexual—just that he was shocked and horrified by the idea of what he saw.So, what did he think he saw that caused that reaction? The devices we later see in their Rest Stop for Santa—the sauna, the elliptical machine, the beard purifier, even the reindeer feeding station—could, when viewed up-side down, easily look like devices to attack intruders: to dump boiling water or combustible refuse on or to catch, crush and/or burn an unsuspecting victim passing below. Phineas thought he was looking at a gauntlet of death traps (something that, under other circumstances, he or Ferb might actually decide to design (as in their skate track Of Doom from "The Beak").

Probably Candace or Doof. And if it is, Ascended Fridge Horror is optional.

At some point Heinz will uncover some great truth and be forced to use time travel to convince his parents to mistreat him as a child.

Charlene-2 will be the bad guy in the return to the second dimension episode
https://pbs.twimg.com/media/A8QN7tbCEAA3TZB.jpg:large based on this image. She'll be even worse than Doof-2 was

All the specials are after the summer of the majority of the episodes by far
Beyond the first Christmas special(already confirmed by Word of God- and Jeremy selling his old guitar already implies this, if someone look to the episodes with his old guitar and the episodes that are chronologically anterior/in the same summer than said episodes by some motive.), the second Christmas special is in July, in one possible reference to the "Summer's route" in 'I, Brobot'. Following The Other Wiki page to Summer, Mid-Summer, the day of 'Attack of the Fifty Foot Sister' is the Summer's solstice. In other words, this episode is in a different summer than 'Summer Belongs To You'. And, finally, 'Where's Perry?' is one of the few episodes that is definitively after the "official" start of the Candace/Jeremy romance in 'Summer Belongs To You'.

All the boys of the A plot are counterparts to one of the Fireside Girls
Well, Isabella was put as direct counterpart to Phineas in ''Isabella and the Temple of Sap´´ and the B plot is a counterpart to the normal B plot. It is possible that exist other examples, possibly all, specially if the rumors of a Spin-Off are true.

In the 2nd dimension episode 2nd dimension Phineas will have a crush on 2nd dimension Stacy
In the Second Dimension video game Isabella has a crush on Ferb, so maybe they'll make something to correspond with Ferb's crush on Vanessa, plus in the main dimension there have been theories about Phineas having feelings for Stacy or vice versa.

The "mysterious force" is the squirrel within Norm
It is close to Doofenzmirtz and considering that the name of the inators describes their function, Norm probably turns things "normal" or "in the norm". Right, Norm was created after the start of the Big Ideas, but the squirrel in his heart not.

The reaction of Phineas to Perry's secret in the movie will receive a Continuity Nod in a future busting with Linda's reaction/speech
Well, as Ferb hinted in the movie, the boys are technically living a double life and the authors love Continuity Nods.

Perry's dream in 'Phineas And Ferb Get Busted' is in the same night than 'Candace Gets Busted'
Beyond the similarity of the names of the episodes, this is only time in the series by far in which Perry sees Linda in her angry state.

Linda already knows about Phineas and Ferb's experiments.
She doesn't talk about it so they'll won't appear like CloudCuckooLanders like a certain ex of hers.
  • Except she has seen their inventions once and totally freaked out, yet was zapped by Doofensmirtz's amnesia-inator every time she saw it. Also why would she keep it a secret, if EVERYONE IN THE ENTIRE CITY knows?

Pinky's berserk button is when Isabella in danger of being harmed.
Similar to how Perry gets when it seems that Phineas and Ferb are in danger, Pinky does the same when it comes to Isabella.

The final song of the show will be Today is gonna be a Great day.
What better way to end the show then to play the theme song.

The A-plot of "Act Your Age" will take place in Phineasland
Everything we have heard about the episode so far implies that there will be at least some focus on Phineas and Isabella's relationship, with Dan Povenmire even mentioning that there will be a scene that will "burst a blood vessel". Considering the writers' track record with Phinabella, we have reason to assume that nothing big will happen at all, so this moment Dan is referring to could be negative or positive. However, if it turns out to be the latter, then it is possible that the A-plot of the episode will have just been a giant Phineasland moment (or if the writers are in the mood for any jabs at fans, then it will have been a story Isabella wrote imagining what it would be like if she and Phineas were together). And because Status Quo Is God, nothing will have changed and Isabella will still be trying to get Phineas' attention.
  • To go even further, what if the episode doesn't even exist, and is just a massive practical joke? The writers are completely aware of how popular Phinbella is (and even how rabid some of the shippers are), so they decided that they should write fake song notes, label photos as making the Phinbella song when they are completely different songs, make up who is writing the episode, create a title and "release" loads of other little bits of information. We fans will believe it all, until the airdate of the episode, where we will get something completely unrelated to Phineas and Isabella's relationship.

Rocket Racoon is a rogue OWCA agent.
Hey, if this show really does take place in a Marvel universe...
  • And maybe Howard the Duck, like Spidey guessed.

Roger and Heinz Doofenshmirtz have different fathers.
Doof's mom has a passionate affair with someone much more handsome than Doof's father, and Roger is the result. Because Doof's mom loves this other guy more than her husband, she favors Roger over Heinz. And in a case of coming to the wrong conclusion, Doof's father notices the difference between Roger and Heinz, but mistakenly thinks that Roger is his son, because he doesn't want to believe or doesn't realize that he's an ugly man.

Therefore, both parents favor Roger and shun Heinz, creating the emotionally scarring backstory that is Doofenshmirtz.

Phineas and Ferb started with their Big Ideas in the summer with Candace's 14th birthday
The gorilla in the cake is clearly a Big Idea, Candace looks like a teenager in the Christmas special and, following her, the year of the Christmas special was the first year with Big Ideas.

Phineas does not lose his temper in "Mission Marvel".
Phineas normally keeps his ace card nearby by dropping a trail of clues for her to follow, but in Mission Marvel he sees with his own eyes the power of one so-called god taken away. He can't risk that with his holy grail, so he snaps at her in order to trigger her depressed moping in her room side and keep her away from the god draining rays. However her power manipulates her (as usual) to move to just the right spot and push just the right button at the right moment, saving the day as always.

"Mission Marvel" didn't really happen...it was Candace's fanfic story.
She cast herself in a less-than-sympathetic light to avoid accusations of being a Mary Sue and yet also indulge in a little angst. Her actions really do end up saving the day in the end. Phineas being out of character? That's Candace's usual lack of insight into the motives of others, especially her brothers. As for the cover of her comic showing her and the heroes ice skating...? That's a scene she had to cut for pacing, and besides...Covers Always Lie.

Season 4 is going to gradually dissolve the status quo.
We have already received a major status quo change in "Happy Birthday, Isabella", where Stacy discovers Perry's secret identity and vows to keep it quiet. However, there have also been other little (and debatable) things that could support this idea, like Linda actually busting Phineas and Ferb (for not cleaning up a party, mind you) and also a brief moment in One Good Turn where Linda outright states that Candace's busting routine is getting old. The plots for some future episodes sound like they could have an effect on the status quo too, for example the "Act Your Age" episode sounds like it will have a major effect on the Phineas/Isabella relationship, there will be an episode where Perry is forced to distance himself from the OWCA, and then there was a leak that listed an episode called "Last Day of Summer". This could be a sign that the show's status quo is starting to fall apart, though it is too soon to say for sure.
  • Adding to this, maybe a portion of Season 4 is going to form some sort of story arc, where as the status quo is destroyed, the characters are put through (main reason to suggest this outside what has already been said is that concept art for the Second Dimension episode appears to have an image of our Phineas with Isabella-2, because a clearer image shows Phineas-2 still has shaved hair).
  • Not to mention more and more episodes have been straying away from the common format, becoming either more epic "Chronicles of Meap, Meapless in Seattle, Where's Perry" shifts the focus more on Perry "Sidetracked, Primal Perry" (Both also fall into more epic) or a different continuity entirely in different time periods.

"Got Game?" takes place after Mission Marvel.
We already know that the show seems to air in Anachronic Order, so this is a possibility. Basically, the tension from what Buford said to Isabella in Mission Marvel still remained, and the two of them resolved their feelings of girls being just as capable as boys (which also makes up for a lack of depth to Isabella's subplot in Mission Marvel).

Episodes that don't take place in Summer are caused by Reality Warping
Phineas and Ferb may decide to do some things outside Summer like celebrate Christmas or Halloween, so they build a device that lets them live out non-Summer days during Summer. However, the side effect of this is that time becomes screwed up, causing Summer to be longer than it really should be.
  • With Family Christmas, the boys could've just decided it would be interesting to do a Christmas show in July.

Major Monogram believes that Vanessa is bisexual as of Drusselstienoween, and that Stacy is the same, or a lesbian
.Monogram saw Vanessa dancing with someone he believed to be his son Monty in Scarlet Pimpernel costume. (It was Monty, but that's not important to the WMG). When he goes to confront "Monty", he discovers that it's Stacy, and still in Vanessa's company. Given that's he's done research on Vanessa in the past (and maybe read Perry's reports)) he knows she's dated at least one boy in the past, so he may be under the impression that she swings both ways, or is at least experimenting. How much research he's done on Stacy is questionable.

Stacy will ask Vanessa for a favor
Vanessa told Stacy she owed her one after helping her. Stacy said that wasn't necessary, but she may change her mind and decide to collect later.

The "cuteness" interference from The Chronicles of Meap came from Phineas himself
He put Isabella's cuteness into account, but not his own, perhaps because he doesn't see himself that way. Let's face it, Phineas is a Badass Adorable tech whiz, the cuteness detector would have picked up on that.

Phineas and Ferb had invented a machine to make summer last forever
Which in turn...

The above WMG overlaps with Gravity Falls explaining why Summer will never end for them either, causing both shows to be in the same continuity
  • Anyone smell a crossover?

They'll eventually make a Mission Marvel sequel
Where Perry is assigned/forced to teamup on a mission in another galaxy with Rocket Raccoon who hates him. Though it will feature Marvel characters who weren't in the first one like Silver Surfer, and Deadpool. And while Perry is on his space mission, Phineas and Ferb on Earth will end up having to team up with the Fantastic Four to stop a villain stealing intelligence from the smartest minds in the world, eventually Reed Richards has his mind drained, having a character obligated to say Reed Richards Is Useless

Phineas and Ferb will visit Australia
They've already taken family trips to Hawaii and Africa, and ventured across the globe in a day. The Flynn-Fletcher family visiting the land down under could provide several scenarios:
  • Phineas and Ferb build a giant boomerang and fly it across the continent
  • Phineas and Ferb perform at the Sydney Opera House
  • Perry meeting a tribe of wild platypuses
  • The return of Liam McCracken (from "Primal Perry")
  • And of course: Surfing, koala hugging, kangaroo boxing, crocodile wrestling
    • Sort of happens in "Save Summer" - nobody actually visits Australia, but we do briefly see Phineas, Ferb and their friends on the top of Uluru during the opening song via hologram projection.

in "Interview With a Platypus", Perry deliberately sabotaged P&F's attempt to translate his chatter
In said episode we see that virtually all animals can talk to humans with the help of the translator, as well as to each other without an translator (like some sort of universal animal language). So why didn't it work on Perry, who is clearly intelligent enough to assume he too must have some sort of language? Because Perry, knowing his owner's reputation, realized the machine would actually work but didn't want them to find out he could talk (or at least didn't want Linda to find out) and deliberately said something gibberish or unintelligible that the machine could not translate.
  • So your saying he just said the sound he makes? That's not a theory, that's pointing out the obvious.

The upcoming episode "Save Summer" could be the end
By end, hopefully not the series' finale. Instead, it will be the last episode to take place during a perpetual summer. The show will then change to have its main characters going to school, leading up to a whole new stack of scenarios for them and their pals.
  • In addition, Jeremy will be Put on a Bus for college, leaving Candace in a state of depression as the love of her life is gone. Then in a matter of time, he will make a big return to the cast.
    • The upcoming episode "Doof 101", which is slated to be about school, will air to test the waters.
  • Jossed: it will actually be the first of the hour long specials.
    • However, the special entitled "Last Day of Summer" was the series' send off.

The live show is canon.
Think about it, the summer has lasted past the 104 day mart.Obviously Phineas and Ferb succeeded in making summer last forever with the auidence-controlinator.
  • It kinda makes you wonder whether or not Doof was Phineas's real father.......... He does have the ability to wield Doof's inators pretty easily.

In the series finale, the boys will get busted.
And Linda will think that whatever they made is awesome.

If there were a Gender Bender episode
Most likely from Doof's genderbend-inator. Some characters' GB names may be:
  • Phiona (Phineas)
  • Ferbette (Ferb)
  • Paris (Perry)
  • Ezekiel (Isabella)

"Save Summer" is actually fairly early in the Phineas and Ferb timeline, and is the reason why the show seems to have an infinite Summer
When Candace stops moving the Earth back to its original position, what if they went a bit further than they thought, which ends up heating the Earth instead, creating an eternal Summer? This would explain why there are so many days of Summer, which ended up making people working in the education department confused and pretty much deciding to go "oh screw it" when school is supposed to arrive. For this first Summer, important episodes like the episodes establishing the characters in this episode would have to take place before it (as well as episodes referenced in the episode), and when it becomes Autumn/Fall, Summer still continues and so does the show. When certain days like Christmas or other Winter holidays show up, Phineas and Ferb decide to temporarily cool the world and enable the conditions for these holidays. The song "Summer all over the World" also aknowledges that the Southern Hemisphere still has Winter, showing that the seasons are still normal before the Earth's position was meddled with. Buford may mention that this is a special and thus he's yelling at Candace, but since Klimpaloon is referenced - which is a throwback to "The Klimpaloon Ultimatum - it means that since they know about him in that episode that "Summer Belongs to You" also happened before this one (which is also mentioned by Phineas), which is the only other special besides "Mission Marvel" where he yells at Candace. As for LOVE MUFFIN existing for a year at this time, it was implied to have existed in "Norm Unleashed" back in 2007 (before the series, as "The Doonkleberry Imperative" is implied to be in 2012), so maybe it was only officially founded in "Nerdy Dancin", but the groundwork for that was laid a year before "Save Summer".

Isabella had a feeling Phineas was The Beak all along
Despite the fact that this episode was parodying superhero tropes, many people felt that Isabella should've noticed that Phineas was The Beak. But what if the reason she starts to crush on The Beak was because not only was it there when Phineas wasn't, but there was a part of her that felt that it actually was Phineas? Outside of this episode she has only really displayed Single-Target Sexuality, after all, so perhaps she was wishing it was Phineas anyway.

Albert and Jenny will develop a relationship
Alongside Candace and Jeremy, there's the Stacy and Coltrane relationship. If Candace and Stacy have boyfriends, why can't Jenny? This might also allow a friendship between their younger brothers Irving and Django (both used as the Sixth Ranger of the P&F group, they could even become as good a pair as Buford and Baljeet).

An episode will show the main group as adults
The upcoming "Act Your Age" depicts them Phineas, Ferb and their friends as teenagers 10 years into the future. So why not air an episode to take place beyond that. Some characters will have started families with their own children, who now act just like their parents did. It will involve Phineas and Isabella's kids inventing something that their older sibling tries to bust them for. Ferb and his family happen to be there for a visit. Meanwhile, an elderly Doofenshmirtz tries to look for an heir to continue his evil plans.

Candace will try to bust Suzy
Maybe with a little help from Buford, the only other person to know Suzy's true nature. It could end with either Jeremy finding out the truth, or otherwise it could backfire on Candace like her usual busting attempts.

The events of "Act Your Age" will all be a dream
The premise of this special is that Phineas finally realizes Isabella's crush on him after 10 years. Maybe this will turn out to be a dream Phineas had (akin to "Phineas and Ferb Get Busted"). Urged by the possibility, he will ask Isabella if she really does have a crush on him, which will lead to a kiss and opportunities to use them as a couple in the future.

Doofenshmirtz and Poofenplotz will join together for an evil scheme
This is one of those things that should inevitably happen at some point. Of course, it will involve Perry and Pinky once again joining forces to defeat their foes.

Buford and Baljeet will get a spin-off
Because why not? Doof and Perry already seem to be co-stars in the show. Besides, a show about a nerd and a bully being friends seems like something interesting.

If a Gravity Falls crossover happens... Candace would make a deal with Bill Cipher to bust her brothers
It depends if she is that desperate. Plus he would just take her body and as a deal gone wrong he will use the word "bust" as in "busting her brother's heads open" because Phineas and Ferb might make something that interferers with his unknown agenda... plus it would be funny if Candace and Stacy had this dialogue.
Stacy: Candace! What did I tell you not to do?
Candace: Make a deal with a demon to bust my brothers...
Stacy: And what did you do?
Candace: Make a deal with a demon to bust my brothers...
Alternatively/in addition, Doofenshmirtz will team up with the gnomes who kidnapped Mabel.

Not all OWCA agents are animals.
Only a specific branch of the organization has undercover animal spies. The rest of the personnel are humans.
  • Considering Vanessa gained an internship at OWCA in the series finale, this is quite likely true.
    • Well, her dad was adopted by ocelots...

OWCA animals are genetically engineered.
OWCA somehow takes ordinary animals and turns them into semi-anthropomorphic creatures.
  • Can I add a layer of Fridge Horror to this? That essentially amounts to animal abuse...right?

"Kevin" was Candace's twin, but died before they were born.
Similar to the "Candace was meant to be a boy named Kevin" theory. The zebra is some kind of subconscious connection to the twin she never knew (and whom her mother never told her about). The alternate-universe Kevin silhouette that wins the election just looks rather feminine.

If Isabella failed to stop the pharmacists, they would find a way to stop water from transforming them back into their original selves.
Even if the pharmacists are mindless zombies, we have seen that they are smart enough to work together and speak words other than "lots of me." So if Isabella failed to stop them, they would start creating something that would protect them from getting wet, or even make something that would stop water from harming them in the first place. That, or Stacy would defeat them through the power of pure obliviousness.

The crime that had Doofenshmirtz arrested in "Doof 101" was the pharmacist invasion.
We never find out why Doof was forced to do community service and be threatened with jail if he didn't go along with it, so it is possible that seeing as the pharmacist invasion was caused by him, people realised how dangerous he was and he was arrested (and even if it wasn't intentional, people would still attribute it to him since the pharmacists were zombie clones of him). This is probably the only time his inator actually did something truly threatening to civilization, so it would explain why they would arrest him now and never for anything else he has done.

There are Fireside Boys too
There will be an episode involving them and the Fireside Girls. Bonus if they just happen to be look-alikes of each of the girls.

There will be more depth to Principal Lang
In his first appearance in "Doof 101", he is shown to dislike Doofenshmirtz as they were once old college rivals. He is also envious that Doof won over Charlene's heart. He could make an alternate rival for Doofenshmirtz in the future for times Perry isn't involved.

Doofenshmirtz actually does care about Norm, but lets his anger out on him
Having grown up through such a miserable life and having virtually nothing go his way, you'd expect someone like Doofenshmirtz to have some sort of punching bag to relieve any inner stress. Norm, being a loyal carefree robotic henchman who thinks of Doof as a father figure, makes an acceptable target. Hence situations like the ending of "Real Boy".
Doofenshmirtz: You know, Norm, it occurs to me that though I've never had a son, there is someone I can always count on to be there. Someone I've begun to think of as family.
Norm: Yes?
Doofenshmirtz: And that someone is Perry the platypus. See you around, junk pile! (shuts closet door)

There will be another episode in the Second Dimension
This time, they will tie up all the loose ends such as doofenshmirtz and his family being free once more.

The series is composed of three summers.
La Candace Cabra shows Perry commemorating his third birthday and in The Movie, he commemorates his fifth. Yes, one of Phineas activities during "this" summer in The Movie was the One-Hit Wonder that by definition is an one-thing deal, that regularly appears as background music and was given a nod in one of the clips in Mom's Birthday... but said clip describes the most common activity to Phineas and Ferb in the series (near all the episodes have their own musical, after all) and background music can easily be out-of-universe, instances of background music being in-universe being regularly used for laughs. And, despite being so iconic, it is not referenced in Phineas and Ferb past activities in Rollercoaster:The Musical, Jerk De Soleil or The Summer Belongs To You.

Phineas and Ferb are homeschooled.
It would explain why summer has lasted so long: Linda usues an unconventional schedule. Ferb is definitely an exceptional learner and would probably not do well in conventional school. And many of their projects are probably school related- we just don't hear about curriculum or homework or grades because they are radical Unschoolers.

Phineas and Ferb will become OWCA agents
They will one day discover Perry's secret double life. But in order to prevent losing their memories and their beloved platypus, they will join OWCA's league of super agents. After all, they did become agents once ("Ready For the Bettys").

We'll see more Phineas and Ferb, despite the Series Finale
The best possibilities lie in the creators' new upcoming series Milo Murphy's Law. At least according to Dan Povenmire, the two shows apparently share a Verse, which could lead to a crossover sometime down the road.
  • Alternately, "The OWCA Files" could be a de facto Spin-Off. Whether or not Milo Murphy's Law works out, Dan and Swampy may come around to this idea. They themselves have already hinted that as a possibility.
  • There are also a few hints that the main series itself may not be quite over. The creators stated the possibility of it being Uncancelled note  and would be willing to get back on it in the future.
  • "Doof 101" also has potential as a spin-off (maybe in conjunction with "The OWCA Files" depending on how that one plays out).

Ferb's secret double life is being a co-star on Milo Murphy's Law.
Following up from the notion that the shows occur in the same universe.

Act Your Age takes place ten years into the future of the dimension shown in Lost in Danville.
The creators said that Act Your Age takes place ten years into the future, but they never specified which dimension and several dimensions have been shown in the show. This could explain errors within the episode such as Lawrence, Linda, Mrs. Garcia-Shapiro, Nana Shapiro, and Perry not aging, or the main characters not changing a bit since they were kids. Also, Phineas and Ferb are supposed to be ten, and if the episode takes place ten years into the future, then they should be twenty and already in college. Lost in Danville's dimension might look the same as the normal one, but it has its subtle differences so it could get away with something like this.

Act Your Age takes place in a different dimension with a different timeline.
Like the WMG above, this episode takes place in a separate dimension from the normal one, but with one major difference: the main characters' ages are messed with. This could very well account for why they all act no different than they do in the main universe's timeline, like Phineas still being oblivious or Candace still seemingly hitched on busting when she should've gotten over it as the boys got older, and why Perry and the adults don't seem to have aged like they do twenty years later. For some reason, Phineas, Ferb, and the gang that weren't legal adults in the original dimension were all aged up ten years.

Stacy considers Major Monogram her nemesis.
She's keeping two giant secrets from him (Knowing about Perry's double life and that Monty and Vanessa are dating) and there's a smile on her face when she calls him "Mr. Water and Power Guy" and he pretends to be just that. A sense of satisfaction from knowing she has him totally fooled?

Wedgie's: The Gym For Bullies and TUFF Gum are made by LOVEMUFFIN members in an effort to sell Evil to a Child Demographic

The time hole in This Is Your Backstory ended in the same day as Act Your Age.
A clip from Act Your Age appears in the final song of the series, despite being in the future. Beyond this, the iconic tree in the backyard of Phineas and Ferb was killed in The OCWA Files and switched with a pine tree, despite appearing in Act Your Age .

Perry's Ferbdisguise
You know how Perry disguised himself as Ferb in Traffic cam caper? He was using one of Carl's Flynn-Fletcher robots.

Boomjuice.
Boomjuice is what evil scientists use to refer to nitroglycerin.

Carl became a vampire sometime before the episode "Brain Drain."
Consider the following: in this episode, Carl says that he hates the smell of garlic. But in "Ain't No Kiddie Ride," Carl said he was born without nostrils, and thus couldn't smell anything. Well, what supernatural being hates garlic and is sometimes depicted with heightened senses? (Maybe a vampire bit Carl on the nose, and the indentations from the fangs are able to function as nostrils. Stupid, I know.) Also, he can apparently smell postage stamps in the episode "The Curse of Candace." You know, the episode where Candace thinks she's a vampire! Maybe Carl is the very same bat that bit Candace! Coincidence? Yeah, probably. But it would explain why his skin is so pale.

Something happened to Vanessa between the regular timeframe and Act Your Age to slow/stop/regress her age.
Vanessa (unlike the kids, Candace, and just about everyone else) doesn't look noticeably older. And she is dating Ferb, even though he is 18 and she should be 26/27. Sometime after the last day of summer, something happened to Vanessa to make it so she is only 19-20. Her aging was slowed down, she regressed in age, she was in stasis for a few years, she got jumped forward in time, or something. And given the Milo Murphy's Law stinger, it probably involved some sort of time travel experiment.

The Bug Trio were affected by one of the inventions by the boys or Doof
Remember Phineas and Ferb's sorbet machine that turned Candace into a fly in "Fly on the Wall" and later the Fireside Girls into bees in "Bee Story"? And that fly in the former episode who was given a human head, supposedly by an -inator? Floyd, Napoleon and Wendell may have been victims of a similar circumstance, enabling them with human speech and intelligence and leading to their desire to communicate with the humans.

The "nemesis" relationship and the "bully/nerd" relationship are branches of the same specific accepted relationship status in the PNF universe, outside of the concept of secret agents, comparable to kismesitude.
It's already clear in canon that a nemesis-ship is as legitimate a bond as a romantic relationship, most evident in the Peter the Panda situation. Likewise, Buford and Baljeet eventually treat their "bullying" relationship as a ritualistic means of expressing interest in one another, with Baljeet seeing Buford as "his" nerd and such. Both relationships reflect an accepted committed relationship style in Danville culture, and possibly in the entire Dwampyverse, where you constantly mess with the other's plans as a means to show affection and encourage their growth. It goes beyond the binary of "friendship" or "romance" and is its own kind of relationship.

Drusselstein was created after World War II as a safe haven for German Jews.
Most of the proper names associated with Drusselstein have clear non-German influence. For example, many of them are spelled with SH (instead of SCH as would be spelled in German), which exists in Hebrew/Yiddish. Many Drusselsteinians (especially Dr. Doofenshmirtz) also fit many Jewish stereotypes, such as having a long nose, beady eyes, a bad accent, and exploitative business practices ("Doofenshmirtz Evil Inc.").
  • Drusselstein claims to have a centuries-long history. However, during most of the 2nd millennium, Germany was a loosely organized group of kingdoms and principalities, and it is highly possible that Drusselstein views itself as the successor to these.
  • If this is true, then Drusselstein is likely on the coast of the Baltic Sea, in modern-day northeast Germany/northwest Poland. Drusselstein would have probably allied with NATO during the Cold War, giving NATO a massive military advantage, and accelerating the technological arms race between NATO and the Warsaw Pact. This possibly led to advanced technologies that Phineas and Ferb use in the show.

Ferb wrote Excaliferb.
It's previously been theorized that Irving wrote the book, citing theories about him knowing about Perry's double life. However between Ready for the Bettys and his reaction to Agent P in Across the Second Dimension, it is very easy to believe Ferb knows as well. It is easy to believe therefore that Ferb is the one who wrote Excaliferb, this explains why Ferb is the chosen one and protagonist of the book; as he's by far the more verbal one, Phineas is the one who normally gets the attention, so Ferb made himself the hero of the book.

    Season Five 
Characters from "Milo Murphy's Law" will make appearances in the new episodes
Let's face it, that show is never getting another season, so this is their best bet. Besides, they originally wanted Milo himself to appear in the latest movie, so its not completely out of the question.

Doof will return to being evil
This is pretty much a given as the first dialogue Povenmire recorded for the upcoming season involves Doof trapping Perry. Plus, the show isn't as funny when Doof continues to be good. Old habits die hard, so it figures that Doofenshmirtz Evil Incorporated will be back in business, and he'll return to making overcomplicated schemes and making inators with his ex-wife's alimony.

David Errigo, Jr. will continue voicing Ferb
Thomas Brodie-Sangster's star across the pond has continued to rise with projects such as The Queen's Gambit and The Artful Dodger. Plus, coordinating with him to record just one line over the phone seemed to be a hassle, so it stands to reason that Errigo will be voicing Ferb from here on out.

The Fireside Girls will be recast.
Some might stay, maybe Ariel Winter as Gretchen, Madison Pettis as Adyson, but the others have aged out of their roles, and plus, Diamond White, the most recent voice of Holly, has been busy with Moon Girl and Devil Dinosaur.

Characters like Jenny and Django will be given more screen time
Word of God is that they're siblings, so their relationship could be the focus of an episode. Jenny could play a major role in a Green Aesop story. Meanwhile, Django and Irving could become rivals competing to be the Sixth Ranger of Phineas and Ferb's group.

More Perry and Stacy moments
Stacy discovered Perry's secret identity in Season 4, but apart from a brief interaction with Vanessa and Monogram, this wasn't really touched upon further. But Season 5 can very well change that. As Stacy continues to keep Perry's secret hidden, she could potentially be dragged along on a mission. Perhaps an episode where she, Vanessa and Candace hang out together, but then (with Vanessa's help) must try to keep Candace from seeing Perry and Doof fighting in the background.
  • "Agent T (For Teen)" could likely be a Perry and Stacy team-up episode.


MOM! MOM! MOM! MOM! MOM! Phineas and Ferb are Wild Mass Guessing!
*not looking* Of course they are, Dear.

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