"Katie Alexis Knight!"

"Kendall Donald Knight!" Ten year old Katie sat on the couch lazily flipping through tv channels, absolutely bored out of her mind. "What's up, Big Brother?"

"What's up? What's up?" Loud footsteps were heard a second before her older brother entered the living room where she sat, glaring at her with his arms crossed. "It's blue!" Kendall yelped, pointing up at his new hairstyle.

"Ohmygod," Katie giggled, clapping a hand over her mouth.

"What did you do?"

"Why do you assume it's me who did it?" the younger Knight challenged, arms now crossed, looking like a reflection of her brother, just...smaller and female.

"Because you're always pulling stuff like this," the blonde growled, tapping his foot impatiently. "Did you do this?"

"Did I get the bottles wrong?" Katie mumbled to herself.

She never messed up her revenge on James. Never.

"What do you mean?"

"Well...It was supposed to happen to James," the petite brunette explained. "He kept fighting me, saying that I have a crush on him and I decided to teach him a lesson. I guess I screwed up which bottle was which last night. Sorry, Kenny."

"The one day I borrow James' shampoo," Kendall sighed, throwing his head back and running his hands through his newly dyed hair.

"So I didn't mess it up!" Katie perked up at this news, a grin on her face and a twinkle in her big brown eyes.

"No, you didn't," her older brother laughed. "But you are in serious trouble, missy."

"Uh oh. Kendall, don't!"

"Sorry, Baby Sister, but you have to learn your lesson!"

And then the tall blonde was straddling his younger sister's lap, running his long fingers up and down her sides as she shrieked and writhed under him, tears of laughter rolling down her rosy cheeks.

"I'm-I'm sorry!" Katie squeaked, placing her hands on her brother's chest and trying to push him off her. The sixteen year old had a lot more weight and strength on his sister, using these assets to his advantage and holding both her hands in one of his own, the other relentlessly tickling her.

Kendall finally let his little sister up with a chuckle, leaning down to kiss her forehead. Katie wasn't having any of that, though. She reached up and grabbed the collar of her brother's flannel shirt, pulling him past her and onto the couch where she presumed to beat him.

Softly.

With a pillow.

James stepped into apartment 2J, took one look at his faux little sister hitting his blue-haired best friend with a pillow, and backed right out, motioning for Logan and Carlos to follow him as he fled down the hallway.

"Don't go in there," he chuckled. "They're having one of their smackdown sessions again."

The boys looked at eachother and gave one another knowing nods, following James' lead.

No one wanted to come in the middle of that.