A/N:
I don't own Phineas and Ferb, because otherwise I'd be a dude and either named Dan Povenmire or Jeff "Swampy" Marsh...

I hope this lives up to your expectations! I'm open to suggestions on how to improve! Enjoy! :D

So stick with us 'cuz Phineas and Ferb are gonna do it all!

MOM! PHINEAS AND FERB ARE CREATING A TITLE SEQUENCE!

*guitar riff*

"Candace, honey, what are you up to today?" Mom asked her daughter.

Candace smiled, "Well, mom, today Jeremy and I were going on a double date to the beach with Stacey and Coltrane."

"That sounds nice, dear," Mom replied, "Boys? What about you?"

"Well, Ferb was just talking to me," Phineas started.

"Ferb? Talk? Really?" Irving questioned, sitting beside Ferb at the breakfast table.

Phineas turned to his friend, "How did you get here?"

Irving shrugged. Candace turned to Phineas, "Well, as long as whatever you're doing doesn't interfere with my date…"

Mom shook her head, "Alright. Well, your father and I will be helping the mayor pick out the new city hall furnishings. We should be back by supper, and we'll bring you food, okay?"

"Bye mom! Bye dad!" Phineas, Candace, and Irving said in unison. Everyone turned to Irving. "I felt lonely…" he responded.

"I know what we're going to do today, Ferb!" Phineas announced in the backyard.

"Whatcha doin'?" a familiar voice called out from the gate.

"Oh, hey Isabella! Ferb and I were just thinking about how everyone says that Ferb doesn't talk much."

"Well, he doesn't," Isabella shrugged.

Phineas smiled, "So we're going to change that! Ferb and I are making a Brain Switcheroo to switch the cortex of our brains that controls our speech!"

Isabella thought for a moment, "So Ferb will talk as much as you do, but you'll still keep your personalities?"

"Precisely!" Phineas exclaimed happily, "Would you like to help?"

"Sure!" Isabella agreed happily.

"I'll help too!" squealed Irving, jumping out from behind the fence. "Hey, where's Perry?"

"Hello, Agent P," Major Monogram greeted from the big screen, "Today we just found out that Vanessa, Doofinshmirtz's daughter, and her boyfriend are no longer a couple."

"Does this mean I stand a chance?" Carl shouted in excitement.

"No, Carl, I told you not to fraternize with the Doofinshmirtzes," Major Monogram replied in annoyance, "Anyway, Agent P, this means that Doof is not happy, so make sure that you thwart whatever evil he may be up to. Monogram out."

With that, Agent P took off in his hover car and flew off to defeat the villain.

Perry!

"So it's almost done," Phineas announced, "Just one more touch…"

"There!" Isabella squealed in delight.

"Alright, Ferb, let's sit in the chairs. Isabella and Irving will pull the helmets over our heads, and the flip the switch!" Phineas explained. He and his brother sat in the red leather chairs as Irving and Isabella pulled the salon-hair stylers over their heads.

"Ready?" Isabella asked, hand over the switch.

"Whenever you are!" Phineas shouted. Ferb gave a thumbs up in reply. Isabella flipped the switch and a bright light erupted, surging down to the chairs where Phineas and Ferb were seated. In the opposite direction, electricity rushed toward Isabella and Irving.

"Are you guys okay? Phineas?" Irving shouted from the ground.

Phineas just lifted the headgear from his head and gave Irving a thumbs up.

"It worked! I knew you guys could do it!" Isabella squealed, wheezing for breath unexpectedly.

"Erm, Isabella, why are you wheezing like Irving?" Ferb asked, walking towards the girl.

"What are you talking abo- WHY AM I WEARING PINK?" Isabella shrieked suddenly.

Irving looked down, "I'm hideous!" he screamed.

"Thanks a lot," Isabella retorted.

"It would seem that the Brain Switcheroo switched Phineas' cortex with mine, but switched your personalities," Ferb explained logically. Phineas simply nodded in agreement. "We'll get to work right away on how to fix that problem."

"You mean you didn't make a reverse function?" Isabella fretted.

"Of course we did," Ferb replied, "But it's high time that our invention got destroyed before it fulfilled its full duty." Then, as if on cue, a red ray of light came whizzing towards the invention, headed for a collision with Ferb. He ducked, and the ray hit the invention, destroying it. "See?" Ferb told his astonished friends, "This is why we should listen to the Brits."

Five minutes earlier…

"Perry the Platypus? What are you doing here?" Dr. Doofinshmirtz said in surprise as he opened his door. Perry shrugged. "Oh, I'm not up to evil, just helping my baby girl get through this break up."

"Dad!" Vanessa called from her room, "More ice cream please!"

"Coming!" Doofinshmirtz hollered back, heading to the freezer. Opening it, Perry could see that it was full of ice cream. "See? Just loving my baby girl." Doofinshmirtz went off to give his daughter the ice cream tub.

As he left, Perry looked beside the fridge, where a huge Inator stood. "Brrrrr," Perry cooed, jump-kicking the Inator. As it crashed to the floor, it let out a red ray of light that went shooting out the window.

"Perry the Platypus, why did you smash my You-Hurt-My-Daughter-Prepare-to-Die-inator?" Doofinshmirtz shouted. "I was just going to harm the boy who broke my baby girl's heart!" Perry shrugged and jumped out the window and hang-glided away.

Perry!

"Dad! More ice cream!" Vanessa shouted from her room.

"Coming!" Doofinshmirtz replied, getting another tub of ice cream from the fridge. "CURSE YOU PERRY THE PLATYPUS!"

"So now we need to rebuild the Brain Switcheroo," Irving said, "I'm tired of being a boy." Irving sidled up to Phineas, "Hey, Phineas," he said slightly flirtatiously, "I'm sure you'll figure out how to do it."

"Of course, together Phineas and Ferb can do it!" Isabella said encouragingly.

"Actually, chaps, I just figured it out," Ferb said, laying out a blueprint. "You see, we could rebuild it, or we could build a new, improved version!"

"How would we do that?" Irving asked.

"Phineas, could you please explain the blueprints?" Ferb asked his brother with a smile. Phineas blinked and unrolled the giant blueprint he was holding. He pointed at various parts of it, clapped his hands, and brought them down in a double dream hands. "Precisely," Ferb agreed, "I couldn't have said it better myself."

"What exactly did Phineas say?" Isabella asked Irving.

"I have no idea," Irving replied, "But he did it so handsomely…"

"That's a little creepy," Isabella commented.

"Now let's get to work!" Ferb announced. Some music started up and Ferb slowly began to sing…

"I know I'm infamous for my lack of speech.

But my one line and day seems to be just peach… y…

So now that my brain

Just drives me insane

I feel I must tell you all I never got to say…"

Suddenly the music changed and Ferb began rapping.

"Hey, listen up people

Of the Tri-State Area!

I have some stuff to say

So don't let it scare ya!

Cuz it's been way too long

For this kid's silence

So pardon me if this all

Makes absolutely no sense!

I love making stuff

With my brother Phineas

And I like it when our friends

Join the adventure with us!

We do it for the fun of it

And for the ladies

Everything from a rollercoaster

To music from the eighties

I'm a man of action

But not today!

Now I'm talking

Saying everything I've ever wanted to say!

Candace tries to bust us

But somehow what we do always disappears

So we get to do everything the next day

Cheers!

There's this cute girl I like

Vanessa, the darling

So I wrote a poem of how I feel

And sent it to the singing starling

I wonder where's our platypus

The cheeky chap, Perry

He goes off everyday

The color of a blueberry

Now this list could go on and on

But we're done with the Brain Switcheroo, if I'm not wrong

So I've got to wrap up

My Ferb-tacular song

WORD! GOD SAVE THE QUEEN!"

"Okay, Phineas and I will strap ourselves onto these lab tables," Ferb explained, leading his brother to the lab tables set up, "And Isabella and Irving will hang from these bungee cords attached to the antennae to get their personalities back. Is everyone ready?"

"Ready!" Irving and Isabella replied, as Phineas gave a thumbs up.

Ferb paused. "I'm not sure if I want to stop talking."

"Ferb, you choose whether or not to talk, if you have something to say, just say it. Because what you say is what makes you Ferb, and if that's only one line of dialogue a day, then we love it," Isabella told Ferb.

"Thanks, buddy," Ferb replied with a smile, "Let's do this thing!" Phineas and Ferb strapped themselves in, Isabella and Irving got into the bungee cords, and Ferb reached out.

"Pull the lever, Ferb!" Isabella called out. And Ferb pulled the lever. Light flashed, then stopped. Everyone got out of their harnesses. "It worked! I'm me again!" Isabella squealed, hugging herself. She turned to Phineas. "Phineas?"

"Isabella!" Phineas announced, hugging his friend.

"You're back!" Isabella squealed, pulling him closer.

"And thus concludes our day," Ferb announced. Perry walk up to the green-haired boy, "Oh, there you are, Perry!"

"Vanessa, there's some sort of mail card thingy for you," Doofinshmirtz knocked on his daughters door.

"I don't want it," Vanessa called from her room.

"It's got little hearts on it…" Doofinshmirtz replied, "I can throw it out."

But Vanessa had run over and grabbed the envelope from her dad. She ripped it open and read it. Inside was a poem and a picture of her and Ferb. "Aw, Ferb, that's the sweetest thing anyone's ever done for me," Vanessa quietly said and smiled.

I hope you liked it! I will be writing Phinselle and Ferbella next, and due to another vote, I will be writing This is What Dreams are Made of. The next one should be up by the end of the week!