This is one of the episodes in which Phineas and Ferb creates a brain switcher machine.


Candace, Stacy, Vanessa ,Ring Ring and Jenny were in Candace's room bragging their costumes.When Stacy heard the noise in the backyard, Candace gets upset and brings her friends to the backyard.When Candace tells Phineas and Ferb about the machine, Stacy's foot steps on Vanessa's foot and kicks Jenny and Ring Ring to the machine, getting their brains switched.The machine vanishes and Candace can't decide what to do to switch Jenny's and Ring Ring's brains back.When Isabella, Adyson, Gretchen and Holly walks by with Buford and Baljeet, they tell Phineas whatcha doin.Phineas says:We built a brain switch machine but we accidentally switch Jenny and Ring Ring's brains.And It is destroyed.Candace decides to construct a special brain switch machine.

She lets Jenny and Ring Ring stay put when they get their brains switched.Doofenshmirtz plans to destroy all mug shops. After the brain switcher machine is set, they kick Jenny and Ring Ring to the switcher machine and gets their brains back.Candace transforms into the persona to bust Phineas and Ferb for pushing Stacy whom will step Vanessa's foot.Once she calls mom, she was just running the Flynn-Fletcher Antiques.Once Stacy pulls Linda's arm and brings to Candace, their new device vanished(thinking that Phineas and Ferb built it).Perry kicks Doofenshmirtz and was cursed.

Candace was very jealous once Jenny and Ring Ring transform into personas and fall over from the vanished machine.

Background Information

  • This is the second time Phineas and Ferb created a brain switcher machine.
  • Charlene Doofensmirtz, Emily and Florence appear as cameos in this episode.

Ferb's Line

Jenny(In Ring Ring's Brain):What?!?!I turned into a peace girl!

Ferb:It's bad.Why don't you let Ring Ring in Jenny's brain see her reflection?

Whatcha' Doin

Holly:Whatcha Doin'?

Phineas:(see above)

Memorable Quotes

Candace:Aren't you little OLD to be a background switcher machine employee?

Ring Ring(In Jenny's Brain):No, no I'm not.

Stacy:Waoo!(Steps on Vanessa's foot)

Vanessa:Yikes!AAH!(back kicks Jenny and Ring Ring to the machine)

Candace:What Is That, Stacy?

Stacy:Your brothers are constructing a brain switcher machine!

Candace(In persona Face):THEY ARE SO BUSTED!

Vanessa:Why should you accompany Jenny here because you will not build?

Ring Ring(In Jenny's Brain):Because Candace told us.

Jenny(In Ring Ring's Brain):Yep!Being these are soooo Gross!

Phineas:Oh Hi Isabella!

Isabella:Oh Hi Phineas!(Holly shuts her mouth)

Holly:Whatcha' doin?

Appearances(Cameos and Continuity)

Charlene Doofenshmirtz appears as a costumer in the Flynn Fletcher Antiques, Emily appears near Adyson and Florence is standing behind Ferb and Gretchen.

  • Candace is building something like the way she did in "The Best Lazy Day Ever".
  • When Ring Ring transforms in her persona, her face turns red just like when she will die in "The Ring Ring Touch".

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