A/N: INSPIRATION STRIKES AGAIN! Phineas obtains caffeine and gets a little jittery. And by a 'little', I mean 'blurting out the first thing that comes to his mind'. Hee hee hee, we are going to have a little fun with the second most adorable kid on this show!

Disclaimer: I do not own Phineas and Ferb.

"Wow, Ferb," said Phineas, drinking from a can of soda, "We sure finished this quickly, didn't we? The Holorecorder 5000, the first ever handheld holographic recording machine, is up and running!"
"Phineas," said Ferb, "what are you drinking?"
"Root beer," he replied, downing the last of the soda. "Why do you ask?"
"Look again," said Ferb, taking the now-empty can and revealing the brand name: Dr. Pepper.
"Ferb, do you think the caffeine will hit my system all at once or-" Ferb watched in horror as Phineas' pupils suddenly shrank to tiny pinpricks. The small, already hyperactive boy heard himself start giggling uncontrollably.
"Hey Phineas," said a familiar voice from the gate. "Watcha dooin'?"
"Phineas just drank an entire can of Dr. Pepper," said Ferb, responding for Phineas.
"Is he vibrating?" exclaimed Isabella. Indeed, the poor boy was, in fact, shivering slightly.
"I love it when you say that," Phineas said, apparently directing this at Isabella.
"When I say what?" she asked, slightly confused.
"Watcha dooin'. It's such a simple phrase, and yet with so many possibilities for answers. No day is complete without the cutest girl on earth asking me that." Phineas was now slightly cross-eyed and leaning on, or, rather, being held up by, Isabella. "Hey," said Phineas, apparently just realizing something, "I know what 'watcha dooin' means!"
"Enlighten us," advised Ferb.
"I know it may sound confusing," the redhead said. "Sometimes I wish she'd give it to me straight." Phineas began singing. "But I never feel like I'm losing."
"Losing," echoed Isabella quietly.
"When I take the time to translate!" Phineas sang happily. "That's what I'm talking 'bout. Bow chicka bow wow."
"That's what my baby says," sang Isabella, getting into it about as much as Phineas.
"Mow mow mow."
"And my heart starts pumping."
"Chicka chicka chu whop."
"Never gonna stop!"
"Gitchee gitchee goo means that I love you!" sang Phineas and Isabella, finishing the chorus before Phineas went back to talking. "It means gitchee gitchee goo!" Laughing maniacally, Phineas said, as Isa bella started to leave," Gitchee gitchee goo, Isabella. Gitchee gitchee goo!"

The Next Day
Phineas woke up on the couch. "Wha-what happened?"
Ferb just smirked and pressed the Holorecorder 5000's play button. He was going to enjoy this.

A/N: So, what do you think? Ideas? Opinions? Review!