He's Perry the "Teenaged Boy"

It is a sunny day at the park in Danville, the birds are singing, kids are playing and Candace's 16th birthday is today, and the family decides to celebrate it at the parks family fun center. The whole family is starting to arrive including Phineus and Ferb.

Phineus:- So Ferb what did you get Candace for her birthday?

Ferb:- (shows Phineus lip-gloss)

Phineus:- That's great she's gonna love it, how bought you Perry what did you get?

Perry:- Grrr

Phineus:- Cool.

...They arrive at the entrance to the fun center, but a security guard stops them...

Security Guard:- Sorry kids no pets allowed inside the fun center.

Phineus:- Aw, but Perry won't hurt anyone, he is a Platypus you know, they don't do much.

Security Guard:-Yeah, sorry kid no exceptions, not after that turtle bit my finger(shows injured finger then walks away)

Phineus:- Aw, man that stinks, if only Perry were human then he could enjoy Candace's birthday...(idea hits him)..Wait a minute Ferb I know what were going to do today come on!

...Drags Ferb and Perry off screen, the camera now goes to Candace inside with her friends...

Candace:- O my gosh Stacy I can't believe I'm turning 16!

Stacy:- I know right it seems only last year you were 15, now you can go for your license.

Candace:- Don't you mean my permit?

Stacy:- Oh, right I forgot you had to do that whole 6 months thing before you get it.

Candace:- Yeah, ...hey have you seen Jeremy(looks around)?

Stacy:- No I thought he was with you?

Candace:- Weird, I thought he was with you, hmm, I wonder where he could be?

...The camera then goes to Phineus and Ferb's backyard, where the two seem to be working on a machine of some sort, Jeremy soon arrives and the camera focuses on him...

Jeremy:- Hey, Phineus, hey, Ferb, what are you guys working on?

Phineus:- Oh, hey Jeremy were working on turning Perry into a human so he can go to Candace's party.

Jeremy:- Perry...Human? Ok this I got to see.

Phineus:- just one more bolt...and done! Now all we need is someone to record their voice so Perry can sound human. (looks at Jeremy) You want to do the honors Jeremy?

Jeremy:- Um, sure why not.

...Phineus puts Perry into the machine and closes the door...

Jeremy:-(leans over to the microphone)So what do I say?

Phineus:-Say something.

Jeremy:- Um...say something?

...lights and buttons start to flash, and steam begins to rise from the machine, Jeremy and the others start to back away and watch what the machine does. One final buzz goes off, and the door opens with a figure inside the smoke clears and what walks out is a fully clothed human Perry...