Okay so this is my first shot at writing a dark side to Phineas, so I hope I can get it right. That sounds a little weird, but being fellow authors, I'm sure you get what I mean.
The Beginning of the Summer of the episodes
"Why can't you just be a good boy for one day?" Linda Flynn-Fletcher yelled at her son. Phineas showed no sign of having heard her, his head bobbing to the music screaming out of tiny headphones. His dark sunglasses hid his eyes and his soul from her sight. Linda yanked his headphones out, at the end of her rope. Phineas threw his hands up, annoyed.
"Do NOT give me that look!" Linda yelled. "I have had it up to HERE with your attitude! You used to be a nice boy. You used to be so energetic and optimistic. What. Happened."
"Do you really need to ask?" Phineas drawled, leaning back in the chair and kicking his feet up against the table.
"Yes! I do!" Linda exclaimed. Phineas shook his head.
"You just don't get it, do you?" Phineas asked. "You have no idea just what's going on?" Linda, not for the first and most certainly not for the last time, stared at her son blankly.
"I do not." She said. Phineas sighed.
"You know what, forget it." He said.
"No, you forget it. Just give me one summer, Phineas. One summer of the boy you used to be." Linda was almost begging now, and she hated it. Phineas pinched the bridge of his oversized nose.
"One summer." He said. "I'll try, but I'm not promising anything."
"Good. And you really should spend more time with your step-brother." Linda said, more confident now that it seemed she was getting her way. Phineas groaned.
"Ferb? But he's just so weird and, I don't know, boring." He said. "He never talks." Linda sighed.
"You know what? Just…make an effort." She said, leaving the room. Phineas watched her go, his eyes following her as she turned her back and walked away, probably to go complain to her new husband about how unbearable her son was. Phineas smirked. One summer, Mom. He thought. And then I get what I want.
Tell me what you think! Short, I know, but good, right? Anyway, it sets the stage, so get ready for the next chapter. Moo ha ha. (Chuck shout out, for whoever caught that. Tell me who said it and what they were doing at the time in a review if you know.)