I don't own Phineas and Ferb. This is the part at the very end of the episodes where te credits roll. I usually like when they do this on the show, so I figured I'd do it too.
*Credits roll*
Doofenshmirtz Evil Incorporated!
A weary Dr. Doofenshmirtz entered his lair, along with Norm and Vanessa.
"This is going to be a loooong- hey what's this?" he said.
He saw a package on the counter with a tag on it saying "From: Pierre Bartholomew Equitulpus. Sorry for crashing into you."
Dr. Doofenshmirtz tore it open and daw it was a coffee cup with his name on it. He held the handle and said "YES! FINALLY, SOMEONE GOT IT RI-"
He moved his thumb and his smiled disappeared. Instead of saying "Dr. Doofenshmirtz", like he wanted, it said "Mr. Doofenshmirtz".
"... CURSE YOU, PIERRE EQUITULPUS!" he shouted.
*Cue Disney Logo*
The End For Real
Okay, now it's the end. By the way, for you super fans, there's a hidden reference in Perry's new name from the movie. Also, I changed his last name from Equitul to Equitulpus so that Dr. D could shouted it and make it sound like "Curse you Perry the Platypus".