|“||You can have the biggest ice cream sundae ever made!||”|
— Phineas Flynn
The boys make the biggest ice-cream maker for Isabella after her tonsils are taken out. Vanessa Doofenshmirtz spends the day at her dad's company, trying to convince her mom that he's evil, in the same style as Candace to Linda.
Phineas and Ferb visit Isabella at the hospital, where she has just had her tonsils removed. Phineas was wondering if Isabella would help them on their next project. But her throat still hurts. Phineas then tells some actors that the Trojan war reenactment will have to be postponed until further notice. Phineas tells her that she could eat the biggest ice cream sundae in the world. This gives him an idea. Phineas tells Ferb to fetch the blueprints for a giant ice cream machine at Blueprint Heaven, while he calls the delivery guy.
Meanwhile, Vanessa Doofenshmirtz is preparing for her weekend visit to her father, Dr. Heinz Doofenshmirtz. She tries to convince her mother Charlene Doofenshmirtz that her father is in fact evil, in that he has evil schemes, and a nemesis. Charlene dismisses these claims in a manner similar to Linda. In order to provide proof, she calls up his number, which has his Evil Jingle as the answering machine message. When she tries to play it again for her mother, Heinz picks up, since he was near the phone. Since they are on the phone, Heinz asks Vanessa to stop by Blueprint Heaven to pick up his special order of blueprints.
Ferb fetches the blueprints for the invention, where he spots Vanessa for the first time. He gets distracted by Vanessa and gets the plans mixed up with Dr. Doofenshmirtz's prints. Phineas and Ferb go home and start building their machine, which turns out to be a space-laser-inator, designed by Dr. Doofenshmirtz. Meanwhile Agent P is on the move, told by Major Monogram that Carl failed in his mission, dressing as a saleswoman who gave the blueprints to Ferb and Vanessa, to not provide the authentic plans to Vanessa but went too into character. Thus Perry has to go foil the plan. When he arrives, Vanessa hasn't arrived at the Doofenshmirtz Evil Incorporated building, and Dr. Doofenshmirtz asks Perry to sit down in a convenient waiting area reminiscent of a dental waiting lobby. Vanessa arrives and passes the plans to her father.
Candace watches Phineas and Ferb behind the fence, while Vanessa writes notes down about her father to gain proof. Candace and Vanessa share a duet, Busted, through the unity of their plans to bust their respective annoyances, over a montage of Dr Doofenshmirtz building the Ice Cream Machine and Phineas and Ferb constructing the Space-Laser-inator.
Dr. Doofenshmirtz completes the ice cream maker unknowingly and traps Perry in a cage. Vanessa plays along, and Dr. D explains his scheme, to use the Space-Laser-Inator to burn away a billboard blocking his panoramic view of the Tri-State Area and also destroy the other things he despises like nature, beauty, and morning talk show hosts. Vanessa is ecstatic that this will get her the proof she needs.
Candace calls her mom while Vanessa calls her own, who is coincidentally Linda's cooking partner at the cooking class, and both have to cut their class short. So they leave without cleaning the crepe batter on the burner which catches fire, unnoticed.
Meanwhile, Phineas and Ferb complete building the space-laser-inator and activate it, making it blast off into space. Phineas repeats Dr. Doofenshmirtz's sentiment. He then realizes that the plans were for a space-laser-inator, and says that it's a good thing they didn't connect the laser. Linda comes over, missing the device's launch, and offers to help Phineas and Ferb make a giant ice cream sundae for Isabella. Candace is stunned that she didn't see the invention.
Doofenshmirtz gets covered in mint ice cream when he activates the device. "Well this can't be right," Doofenshmirtz exclaims, just as his ex-wife Charlene arrives at his building. Charlene declares that Dr. D is Lactose Intolerant, and reveals she pays him alimony. Vanessa is stunned when her mom says Heinz's invention was not evil. Charlene then releases Perry from the trap, and dismisses Vanessa's claims that the platypus is the Secret Agent she referred to, reiterating the statement that "They (Platypuses) don't do much."
Phineas and Ferb arrive at Isabella's house, where they give her the ice cream. Phineas wonders what distracted Ferb (as he is normally very focused) at Blueprint Heaven, which Ferb responds with "I was weak," which is shown to be caused by Vanessa's presence there.
For a full transcript of I Scream, You Scream, click here.
Second verse of Busted
|The image gallery for I Scream, You Scream may be viewed here.|
The "Too Young" Line
Engineer: Say, aren't you a little...
Phineas: ...young to be using titanium plating and an industrial arc welder? Yes, yes I am. I get that a lot.
Vanessa: So Dad, this... plan is evil, right?
Dr. Doofenshmirtz: Why yes, yes it is. Nice to see your taking the interest in the family business.
Phineas: Hey Ferb, snap out of it. What happened back there?
Ferb: I was weak.
Phineas: So Isabella, what'cha doin'?
Isabella: Oh, just recovering, but I finally got my Tonsillectomy badge.
I know what we're gonna do today
Phineas: You know, the best part of getting your tonsils out is you get to eat all the ice cream you want.
Hey, where's Perry?
Candace: Phineas, you know I'm in charge, right?
Phineas: Uh, isn't that just if a satellite crashes into the-
Oh, there you are, Perry
Doofenshmirtz: My daughter should be here any minute with the blueprints, though. Oh, there she is.
Perry's entrance to his lair
Instead of going to his lair, a random spring in the ground launches Perry into the air and into his hovercraft.
Doofenshmirtz Evil Incorporated! was heard in Vanessa's cellphone.
Phineas: Hello, Blowtorch City? Yeah, I'll hold.
Carl: (Carl in woman costume) Blueprints for an ice cream machine? Hmm I don't think we make those any more. (Ferb blinks) Whoa hold on there sweetie! No need to get upset! I'll just go check in the back! (searches in the back room and pulls out another blueprint) I got blueprints for a yogurt machine. How that sound? (Ferb blinks again) Yeah I don't care for yogurt either baby. I'll keep looking.
Vanessa: (looking at Ferb) Hey how's it goin'?
Charlene: Remember, you're at your dad's this weekend.
Vanessa: Great. A whole forty-eight hours of evil.
Chef: (clears throat) Is there something you'd like to share with the WHOLE class, Ms. Flynn?
Dr. Doofenshmirtz: Then I can go on to eliminate all the other annoyances that make my skin crawl. Like, uh... Nature! (Zaps!) Beauty! (Aww!) Morning talk show hosts! (Yay!) Soon, there will be nothing can withstand the wrath of Dr. Heinz Doofenshmirtz!
Vanessa: Doctor? Since when are you a doctor?
Charlene: (Answering her cellphone) Oh! For Pete's sake, Vanessa!
Linda: (Answering her cellphone) Candace, this better be important.
Phineas: Well, this can't be right. I was wondering what that thing was for. That must be the laser. It's a good thing we didn't attach it, huh?
Charline: (seeing Heinz covered in ice cream) Heinz, what is all this? I thought you were lactose intollerent.
Doofenshmirtz: I am!
Isabella: Wow, guys, this is amazing! I was afraid that you guys were gonna go overboard and build some giant sundae contraption or something!
Phineas: Actually, we were gonna do that, but we accidentally built a space laser instead. Ferb, you're usually so focused. How'd you get those plans confused?
- Linda and Charlene are taking their class at Chef Guilbaud's Cooking School, presumably named after storyboard artist Antoine Guilbaud (who worked on this episode).
- Episode description from the original Phineas and Ferbruary 2008 press release: 
- In "I Scream, You Scream," airing Sunday, Ferb-ruary 17, Allison Janney ("Juno," "The West Wing") guest stars as Charlene, Dr. Doofenshmirtz's ex-wife. After Isabella has her tonsils removed, she's allowed to eat all the ice cream she wants, so Phineas and Ferb build a huge ice cream maker to deliver the biggest ice cream sundae ever.
- Meanwhile as Candace is trying to get her mom to come home from cooking class and see what the boys are up to, Dr. Doofenshmirtz's daughter, Vanessa, is trying to bust her dad.
- February 6, 2008 (Disney Channel Netherlands)
- February 20, 2008 (Disney Channel Germany)
- April 3, 2008 (Disney Channel Latin America)
- June 17, 2008 (Disney Channel Poland)
- When Phineas tells Ferb to collect blueprints from Blueprint Heaven, a pencil appears in his left hand, out of nowhere.
- When Candace first calls Linda at her cooking class, there are other students behind her. Later, when Candace and Vanessa call Linda and Charlene, the other students have disappeared.
- Phineas mentions the laser but never actually cleans it up, therefore their mom should have seen it.
- When Candace is talking on the phone, her feet are much smaller than usual.
- When Phineas activates the space laser, the black button stays in place while the space laser bounces around.
- When Vanessa inspects the price tag on Doofenshmirtz's degree the $ is black, but when Doofenshmirtz holds it in his hand it is green.
- Doofenshmirtz recognizes Perry in the trap without his fedora on.
- The cooktop behind Linda and Charlene has four knobs but only 2 burners.
- Vanessa writes down notes about Doofenshmirtz's plan, but she never got a chance to show them to Charlene.
- At the beginning of the song, Candace peeks from behind the fence, but then she is peeking from the door just seconds later.
- While Ferb was at Blueprint Heaven, he was holding onto the table when Vanessa arrived. In the flashback, however, Ferb was not holding the table when he sees Vanessa.
- When Doofenshmirtz is mistakenly building the ice cream maker, it appears as if he's actually building the Space Laser-inator, but when he's finished, we see the ice cream maker.
- If you look closely at the door during the scenes of Candace and Linda in the backyard, the area in the door has the walls, floor and pictures of Isabella's living room.
- During Busted, in the beginning of Candace's verse in the chorus, Vanessa's coat outlines are red.
- During Busted, when Candace and Vanessa point, Vanessa isn't lined with her section properly, as she can be seen a little superimposed over the line in the center.
- A billboard advertising the Brick toy is erected on top of a building next to Doofenshmirtz Evil Incorporated. ("Toy to the World")
- After Candace says to Phineas that she's in charge, Phineas references the episode "Rollercoaster" by saying, "Isn't it just if a satellite crashes in the-."
- When Perry is in the waiting room, Gitchee Gitchee Goo can be heard. ("Flop Starz")
- Linda takes cooking class with Charlene Doofenshmirtz. ("It's a Mud, Mud, Mud, Mud World")
- I Scream, You Scream - Comes from the old rhyme "I scream, you scream, we all scream for ice cream!"
- Love Actually - Thomas Sangster (voice actor for Ferb) plays Sam, who is in love with Joanna, played by Olivia Olson (voice/singing actress for Vanessa).
- The Godfather - Doofenshmirtz refers to his works as the "Family business," similar to how the characters in the film refer to their works.
- Phineas says Isabella's catch phrase to her.
- The doctor checking on Isabella is Dr. Hirano, Stacy's mother.
- When Isabella was in the hospital her bow on her head was purple, not pink, possibly to match her purple pajamas.
- First time Isabella's bedroom is seen. The bedroom's wallpaper is covered in triangles which resemble Phineas's head.
- First time Ferb and Vanessa have ever interacted.
- The morning talk show host Doofenshmirtz imagines is the TV host from the episode "Flop Starz", "Boyfriend From 27,000 B.C." and "Chez Platypus".
- First episode with the song continued in the end credits.
- The music that plays when Ferb sees Vanessa plays again in "Vanessassary Roughness".
- First time Isabella is seen wearing her pajamas. She will wear them again in "Isabella and the Temple of Sap" and "Brain Drain".
- Candace isn't seen turning to see the Big Idea is not there again. ("Flop Starz")
- First time Doofenshmirtz recognizes Perry without his fedora.
- The kids finally get to reenact the Trojan War in "Troy Story", a while later.
- This marks the first time the "Evil Jingle" is referred to by name.
- Main article: Run Away Runway and I Scream, You Scream/Credits
- Vincent Martella as Phineas
- Ashley Tisdale as Candace
- Thomas Sangster as Ferb
- Caroline Rhea as Mom, Additional Voices
- Dan Povenmire as Dr. Doofenshmirtz, Additional Voices
- Jeff "Swampy" Marsh as Major Monogram, Additional Voices
- Alyson Stoner as Isabella, Additional Voices
- Tyler Mann as Carl
- Olivia Olson as Vanessa
- Dee Bradley Baker as Perry, André Guilbaud
- Kelly Hu as Stacy
- Allison Janney as Charlene, Additional Voices
- French Stewart as Gaston ♦
- Ming Wen as Dr. Hirano
- Additional voices:Jeff Bennett, Loni Love, Aliki Theofilopoulos, Kari Wahlgren
- ♦ designates a character that did not appear in this episode
- ↑ Phineas and Ferb-ruary press release: http://www.disneychannelmedianet.com/assets/pr%5Chtml/PAF_020108.html
"Ready for the Bettys"
"Toy to the World"