Phineas
Actually, instead of improving one of our old inventions, we should make something brand new! Something simple.
Phineas
Well, what is summer all about?
BBBuford, Baljeet, Isabella
[singing "Summer (Where Do We Begin?)"] ♪ Summer is running through the sprinklers in your T-shirt, shoes, and... ♪
Phineas
Yeah, we all know the song. But I'm not exactly sure how....
RRed
Later that day, to make their escape, those boys crawled through 500 yards of foul-smelling nastiness I can't even imagine. 500 yards. That's the length of 11 baseball diamonds, one tennis court, a medium-sized male elephant, and a croquet wicket. It wasn't long before they found everything that they needed.
Phineas
Great! Let's hurry up and put this thing together.
But if we do the mind swap here, those criminals will still be out of jail.
Phineas
You're right! I hadn't thought of that.
RRed
So even later that day, those boys crawled back through 500 yards of foul-smelling nastiness that I-
Actually, it is not as bad as you would think.
Yeah! Gunge is actually quite refreshing!
RRed
Oh. Well, it was still 500 yards. That's the length of two volleyball courts, a Nimitz-class aircraft carrier, a large three-drawer filing cabinet, three French-
We're not listening anymore!
[showing up in the backyard; worried] Phineas, Pinky's missing!
Phineas
Aw, that's too bad, Isabella.
Chihuahuas, that's the first thing zombies go for.
Phineas
Uh, we moved past zombies, Buford.
He's been gone all morning! He didn't even touch his breakfast burrito. What am I going to do?
Phineas
We could make a portable positronic canine detector using the old factory receptors that Ferb and I were gonna use for our milligram scale purification study.
You kids have fun. Really, I wish I could stay and bust you, but I have a lunch date with Jeremy down at City Hall.
I thought they only served subpoenas! [pause] Oh, come on! What's a guy gotta do to get a rimshot around here?!
[Baljeet groans and walks away]
For your information, I'm going down to City Hall because Jeremy's working the Slushy Dawg concession stand at the food court there. And we're gonna have lunch... together. [kneels down to Isabella] Don't worry, Isabella. I'm sure Pinky'll turn up. Perry always does. [concerned] Speaking of which, where is Perry?
[Perry swoops down and activates the Blend-into-the-Background-inator to hide Pinky and himself from revealing their secret identities to the kids]
Right here! Right here, he- What? [takes off the helmet] He should be right here! Oh, man!
Phineas
I don't get it. Maybe the helmet needs to be fine-tuned.
Yeah, you guys do that. I'm gonna go get a Slushy Dawg.
Phineas
Okay, gang. Today, we're gonna tie a legendary knot.
Woah woah woah! We're just startin'?! No—no intro, nothin'?! Just gettin' right into it?
Phineas
Yep, we're just doin' the knot.
Wait, how can we do somethin' not?
Phineas
No, it's "knot" spelled with a "k".
I didn't think it was spelled with a "k".
Phineas
No. It's "knot".....spelled with a "k".
I don't understand your pauses.
Boys, are you here? I just wanted to say- [gasps] Phineas! Ferb! You are so busted!
What? Get out of the way! Wait, wait, wait, wait, wait, wait! Did I hear you just bust Phineas and Ferb?
I certainly did. [Candace giggles under] What are my guest towels doing out here? And they're filthy!
Phineas
Oh, sorry, Mom.
Phineas
We'll clean it up.
Yeah, you do right on that.
Phineas
Ladies and gentlemen, boys and girls, babies and slightly smaller babies, welcome to the Phineas and Ferb Ultimate Obstacle Course! The first team that makes it all the way to the end (you know, alive and stuff) will win this nifty trophy! So are you ready to get muddy?
That tears it! Those two are so—
Hang on, Candace! We can win this!
[Cutaway to Dr. Hirano with Ginger putting up a trophy on display as Stacy watches]
HDr. Hirano
Very good, Ginger. We'll put it up here with the rest of your awards. I'm...still saving a place for your trophy, Stacy. You know, just in case.
Uh... [cut back to her and Candace] ...Uh... Candace, we'd make an awesome team!
And for whatever it was you were thinking about just now.
[The three teams are all ready to begin the obstacle course]
[with Stacy on the red team] We are so ready!
[Stacy sees her little sister with Isabella on the green team; Ginger gives her a thumbs-up, but Stacy gives her the "I'm watching you" motion in return]
Oh, that's our secret code for "I love you, sis"… I think.
Phineas
Good luck, contestants! And watch out for giant worms! On your marks...
Phineas
Get set...
Did he say, "giant worms"?!
Phineas
Go!
Phineas
Ferb, are you expecting someone?
[opens the front door, revealing the Marvel Avengers standing at the doorway] Not them.
[Later in the kitchen…]
Aren't you a little young to be stealing superheroes' superpowers?
Phineas
Yes. Yes, we would be, Spider-Man, if we actually did it. But like I said, I don't think we did.
IMIron Man
You can't see it, but I have a rather severe look of disappointment on my face.
[puts a juice box in his mouth] This'll turn that tin frown upside-down.
TThor
Juice-in-a-box? We have nothing like this in Asgard.
HHulk
[grunting while having trouble putting the straw in the juice box] Straw cannot penetrate!
Hey, hey, hey! Calm blue ocean. Let me take care of that for ya, buddy.
IMIron Man
Thanks, Isabella. Well, the power-siphoning ray originated from the Tri-State Area. And I was thinking you guys would know something about it since it bounced off your space station.
Phineas
Are you sure it was our space station?
HHulk
It was shaped like your head.
Phineas
Well, that sounds like ours, but we don't know anything about a power-siphoning ray.
IMIron Man
I was afraid of that. Well, the first thing we gotta do is get our powers back.
Phineas
Ferb, I know what we're gonna d-
[coming downstairs] Alright, boys and girls, listen up, Mom's on a walking tour of Danville and Dad's tinkering in the basement, so I'm in charge. That means no shenanigans! Hey, Spider-Man. So I'll be over at Stacy's all... d-d-d-day?!
TThor
Greetings, fair young maiden!
It's super...heroes...in...duh...our...kitchen!
Candace is gonna lie down for a while. [leads Candace out of the kitchen and back to her bedroom] That's it. Just breathe. They're only superheroes.
Phineas
Looks like you guys have a fan.
IMIron Man
Oh, boy. [tips over]
TThor
And it's probably good she didn't see that.
Phineas
Hey, where's Perry?
Phineas
Ladies and gentlemen...and Hulk, allow me to unveil our Secret Hideout for Emergency Defects. Or S.H.E.D. for short.
IMIron Man
I think we're gonna need something a little...bigger.
Phineas
Oh, the rustic exterior's a facade. Wait till you see the inside!
[The inside of S.H.E.D. is revealed to be much larger]
IMIron Man
Oh, man! You guys are good!
Just a little British sci-fi technology.
Wow. There's something you don't see every… [notices Phineas' outraged expression; confused] What?
Phineas
[scolds his sister Candace] Really, Candace? Do you have any idea what you just did?!
I was just trying to help.
Phineas
Well, your "help" this morning messed us up so badly, we came this close to being wiped out at the mall! I thought you would've learned your lesson!
Phineas
But, no! You show up again to help, and now Baljeet has been hulkified and is rampaging who knows where! And we're back to square one with restoring the heroes' powers!
Phineas
This is just too important, and we can't afford any more setbacks! I'm revoking your S.H.E.D. card. [takes off her lanyard and rips up her card] You have to go, NOW!
[Candace walks sadly away]
I've always told her, don't ever make Phineas angry. You wouldn't like him when he's angry.
Phineas
Isabella, you've been awfully quiet all day.
[Isabella stares at her watch for a few seconds, then...]
I have just earned my "24 Hours of Silence" patch! I can see why you don't talk much, Ferb. I actually quite enjoyed it. I ended up having an inner dialogue with myself all day.
[Zoom into Ferb's mind, where it is revealed to be populated by himself and giant versions of his head]
FHFerb head #1
Yes, the universe is constantly expanding.
FHFerb head #2
But what is it expanding into?
FHFerb head #3
Okay, now my mind is blown.