[AUTHOR'S NOTE:]
Although I don't watch Johnny Test very often, and Phineas and Ferb a lot, it struck me how similar the worlds were. So I put this crossover together to discuss the parallels and differences. Hope you enjoy :)
"JOOHHHHHNYYYYYY!" Shouted everyone on the street, or at least what was left of it. Johnny Test had misused his sisters' inventions and blown it up.
"I can't believe we have to move and can't take any of our stuff!" Johnny complained, as the Test family drove to a new city, "No more Smash Badger V!"
"It's only for a day, Johnny," Mrs. Test replied, "Enough time for your sisters' construction drones to rebuild all the houses on the street, which you blew up!"
"Yeah, Johnny!" Susan said angrily, "It's your own fault! Good thing Mary and I have genius inventions, or it would be longer."
"I'm sooo booooored!" Johnny went on, "Where are we heading again?"
"It's a city called Danville, in the Tri-State Area," Mary replied, "It's the only place that had enough room on such short notice. Everyone from our street will be in the same building."
"But why?" asked Johnny.
"Because everyone on our street wanted to keep an eye on you, Johnny." Susan responded.
Johnny looked out the back window. All his neighbors were in cars behind them.
"You're dead, Test!" Bumper shouted.
"I will beat you up, Johnny!" Yelled Sissy.
"I'm going to destroy you, Johnny Test!" announced Dark Vegan.
Johnny shrunk down below the window.
"This is going to be a looooong day." he sighed.
"Everyday! Everyday, I tell you!" Candace complained to Stacy on her phone, "Everyday Phineas and Ferb build some gigantic thing in the backyard, and whenever I try to get mom to see it, it just vanishes! It's like a Mysterious Force just makes it disappear! It's not fair! I haven't gotten to relax this summer, because they make me do all the work to try and bust them! It's not fair!"
Stacy sighed, and rolled her eyes, (but since it was on the phone, Candace didn't see,) but before she could say anything, there was a noise of hammering metal in Candace's backyard.
"Gotta go, Stace," Candace jumped up off her bed, and ran downstairs.
Stacy heard a beep on her phone, as Candace cut off.
"Just another normal day." she sighed.
Candace raced to the backyard. Phineas and Ferb had a table laid out with tiny hoverboard prototypes. Next to it was a small metal machine with a conveyer belt.
"What do you two think you're doing?" demanded Candace.
"Oh hi, Candace," Phineas smiled, "Ferb and I built this machine to make custom hoverboards. You can upload images, and they'll print right on them. We're also building a giant race track with giant obstacles to avoid. Do you want to join us?"
Candace looked up to see Ferb up in a giant crane, putting pieces of track together.
"Wow, it's weird that I hadn't noticed that before." she replied, "But I'm. Telling. Mom."
Then she ran out of the gate yelling "Mom! Mom! Mom!"
Phineas and Ferb stared after her for a second.
"So how's that track going, Ferb?" Phineas asked.
"I can't believe we're stuck here for the next twenty-four hours." Johnny complained, "Danville is the most boring town I've ever been in!"
"Come on, Johnny," Dukey said, while wearing his "Not a Dog" shirt, "Is it more boring than any of the old-timey towns you've gone back in time to?"
"Yes." Johnny said angrily.
"Well, you brought this about yourself, Johnny." Dukey said in an annoying voice.
"You just had to bring that up, didn't you?" Johnny scowled, but stopped as he saw something.
"Dukey!" he yelled, "Look at that!"
"What?" replied Dukey, annoyed, as he had bumped into Johnny as he had stopped, then looked at what Johnny saw. He gasped.
It was a giant crane lifting heavy objects onto a frame of a giant track.
"We have to check this out!" Johnny cried, and ran all the way to where it was built.
"Is this someone's backyard?" Dukey wondered out loud.
The track looked more impressive from down below.
Johnny gasped in the same way he did when faced with a new video game, and hearts on his eyes.
"It's so beautiful!" he said through tears.
Suddenly, the crane lowered down a platform, and somebody was standing on it. Somebody who had a triangle shaped face.
"Okay, Ferb," he said, as the platform descended, and looking at blueprints, "I think that we need a little more challenge in the final lap. I don't think the Inexplicable Giant Floating Baby Head is gonna cut it."
He turned his head, and saw Johnny.
"Oh, hi!" The kid with the triangle head smiled, "I'm Phineas, and that's my brother Ferb," he pointed to his stepbrother in the cabin of the giant crane. Ferb gave a thumbs up. "Who are you?"
"My name's Johnny, and this is my friend Dukey." Johnny replied.
"Is he a dog?" Phineas asked, pointing at Dukey.
"Nah, he's just a kid with a hairy skin disorder." Johnny replied nonchalantly.
"Are you sure he's not a dog?" Phineas asked again.
"No." Johnny and Dukey said at the same time.
Phineas looked startled, but then smiled. "Alright then." he replied, "Where are you guys from?"
"We're from a city called Porkbelly," Johnny explained, "But then I accidently used my genius sisters' inventions to blow up our street, and while we wait for their construction drones to rebuild our houses, we're staying here in Danville."
Just then, Isabella walked in the backyard in her fireside girls uniform, followed by Buford and Baljeet.
"Hey Phineas," Isabella said, "Whatcha doin'?" then she caught sight of Johnny and Dukey. "Who are these guys?" she asked, surprised.
"My name's Johnny, and this is my friend Dukey. He has a hairy skin disorder." Johnny replied.
"Right…" Isabella responded.
"They're staying in Danville for the day," Phineas explained, "Johnny accidentally blew up their street."
"Emphasis on accidentally." Johnny clarified, "But what is this amazing thing?" he asked pointing at the track.
"Ferb and I are making a hoverboard race track." Phineas said excitedly, "There will be obstacles all around that you have to avoid. And you can make a custom hoverboard using this machine." he finished, pointing to the metal machine.
"Ooh, love hoverboard racing." Baljeet said excitedly, "There is so much science to it. You have to calculate how far you are above the ground, and be careful of the wind velocity, and-"
"You know, I was excited for this until you said science." Buford interrupted.
"Wait a minute," Johnny said, "You built this?"
"Well, yeah." Phineas replied, "Me and Ferb." Ferb suddenly appeared next to Phineas, and gave a thumbs up.
"Did you use robots to do it?" Johnny asked.
"Well, no." Phineas responded, "We tried using robots once. But they made an overpriced coffee franchise, and took over the rest of our inventions. So we went back to building them ourselves. But it wasn't hard. Ferb's naturally good with tools."
"Aren't you a little young to be able to do this kind of stuff?" Dukey asked.
"Yes, yes we are." smiled Phineas, "We get that a lot."
Dukey whistled. "That is impressive."
"My genius sisters invent things like this," Johnny said, "And I usually end up stealing them."
"That's how he blew up the street." Dukey commented.
"Would you please stop bringing that up!" Johnny said angrily.
"Your sisters build things like this?" Phineas asked.
"Well they like to invent ray guns and stuff," Johnny explained, "But they definitely have the ability."
"So do you guys want to do some hoverboard racing?" Phineas asked.
"Oh, yeah!" Johnny and Dukey said at the same time.
"Buford? Baljeet?" Phineas questioned.
"Sure. I'm totally going to crush you all." Buford responded.
"I have a feeling if I do not, I will end up with a massive wedgie." Baljeet replied, as Buford stood threatening over him.
"What about you, Isabella?" Phineas asked.
"Phineas, I would love to." Isabella replied, "But I have to sell fifty Fireside Girl Cupcake Boxes by the end of the day to raise enough money for our next field trip."
"Well, good luck Isabella." Phineas waved goodbye as she left to grab a wagon full of cupcakes.
"Okay," continued Phineas, "So you can all choose your designs on that computer next to– Hey, Where's Perry?"
"Who's Perry?" asked Johnny.
"He's our pet platypus." Phineas responded.
"You have a pet platypus?" Dukey asked, astounded.
"You have a hairy skin disorder." Ferb pointed out.
Meanwhile, Perry put on his fedora, and jumped behind a painting. He slid down a pipe, and landed on his chair.
"Ah, Agent P." Major Monogram appeared on the screen, "Today the threat from Doofenshmirtz is very great, as he has allied himself with another evildoer by the name of Dark Vegan. Next to you, we have two agents to help you defeat both Doofenshmirtz and Dark Vegan."
Perry turned to see two men sitting next to him.
"This is Mr. Black and Mr. White." Major Monogram continued.
"Uhh… Major Monogram sir?" Mr. Black asked, "Where's the agent we're going to be helping? Is he behind the platypus?"
"What? No, he is the platypus. That's Agent P." Major Monogram clarified.
Perry made a chattering sound. Mr. Black and Mr. White stared at him.
"Also joining me on the screen," Major Monogram continued, "Is the General. He will give you your orders."
"Alright, Mr. Black, Mr. White, Agent P," The General began, "Dark Vegan is a terrible villain, and allied with the evil scientist Dr. Doofenshmirtz, he could be a real threat. We need you to stop him. Usually, we'd get the Test kids to do it, but Johnny already met Agent P's owners, and we can't risk them knowing his identity. So off you go, agents!"
Perry saluted, and ran to his hovercar.
"Uhh… where is it that we're going?" asked Mr. White.
"Agent P's been there before. He should know the way." Major Monogram replied.
"Well I hope he knows the way," Carl the Intern put in, "You never tell the agents where to go."
"For heaven's sake, Carl." Major Monogram rolled his eyes, "He goes there everyday."
Perry flew out of the lair in his platypus shaped hovercar, with Mr. Black and Mr. White squeezed in beside him.