A/N: Yay! I am finally free of Writer's Block!
"Come on, Isabella!" Phineas said excitedly. Granted, this was nothing unusual, but she hadn't seen him like this in years. It was like he was eleven again, racing off to build roller coasters and the like.
"Phineas, I'm not as young as I used to be!" Isabella cried, doing her best to keep up with him.
"Well, you don't turn eighty-five every day, do you," Phineas said, a mischievous look in his eye. "I would hate for you to miss this."
Isabella stepped onto the balcony as Phineas led her towards a telescope.
"I rigged it to a T.V. screen so we could all see," he explained, pressing a button on the telescope.
"What are we watching?" Isabella laughed, sitting down on the couch he'd clearly set up for this express purpose. "And what do you mean by 'we'?"
A grin spread across his face. "Come on in, guys!"
With that, eight kids of varying height and triangle-headedness ran into the room, accompanied by six adults and one aging, British gentleman with green hair.
Phineas took a seat next to his wife, enjoying the shocked look on her face. "Remember seventy-three and a half years ago when we carved our faces into Kermillian's comet? Well, I finally figured out what you meant by 'our grandchildren'."
"About time, too," Ferb remarked, taking a seat next to Phineas.
Phineas glared at his brother. "You are never going to let up with that, are you?"
"After getting laughs about it for over seven decades? I should hope not."