I know the title is kinda cheesy but I'm not a title person unfortunetely... =( But anyway... I've been reading a bunch of Derek/Casey fics and decided to write my own when I got an idea. Now, I am not a supporter at all for incest, I find it disgusting and so wrong, but since Derek and Casey aren't blood related, technically it's not that bad... At least I think... So here is my story and I hope you enjoy it. =]

Disclaimer: Obviously I don't LWD or else I would figure out a way for Derek and Casey to be together on the show... And I don't own any of the products, etc, that are mentioned thoughout the story either.

Rated T for some small sexual references.

Chapter 1

It's Only a Lamp

It was Saturday, 10 AM, as Casey got up out of bed and walked out of her room towards the bathroom. She was just about to open the door when Derek zoomed past her and beat her to it.

"Morning Loser!" He said as he shoved open the door and slammed it in her face.

"Der-ek!" She cried.

"What'd he do now?" Lizzie asked with a yawn as she opened her bedroom door that Casey was standing in front of.

"I was about to use the bathroom when Derek shoved me out the way!" She yelled so that he could hear her.

"Next time be a little faster, Miss. Turtle!" His voice shouted from inside as he laughed.

Casey groaned as she crossed her legs and did the pee dance, "Hurry up!"

"Hey, I'm going as fast as I can here. Don't rush me or I'll take longer."

"Why can't we have more than one bathroom?" Casey asked as she turned to look at her little sister.

"Mom and George have one in the basement. Ask to use theirs." Lizzie suggested as she shrugged her shoulders.

"That's right!" Casey beamed as she headed for the stairs.

"Nice try but Dad and Nora went grocery shopping with Marti." Derek called.

"So...?"

"So, the basement door is locked." He chuckled.

Casey growled as she formed her hands into fists and started banging on the door, "Derek, get out of that bathroom now!"

"Does poor little Casey have to pee?" She heard Derek ask in a mocking voice.

"Derek if you don't get out of there this minute I'll..."

The door flew open and Derek walked out in blue boxers and an orange t-shirt with a grin plastered on his face, "You'll what, nut-Case?"

She huffed, ignoring him and shoved him out of the way as she walked into the bathroom and closed the door.

Once Casey was done relieving her bladder she washed her hands and walked out only to be greeted by the bane of her existence once again.

"Feel better?" He asked as he crossed his arms across his chest and leaned against the wall.

"Why do you insist on annoying me constantly every day?" She asked with a frown as she stared at him.

"Nice pjs." He replied as he eyed up her appearance. She was wearing pink shorts with a blue tank top.

Casey scoffed with her hands on her hips, "What?"

"You should cover yourself up a little more, Case, don't you think?"

"Excuse me? Who's the one in his underwear?"

All he did was laugh as he started walking down the stairs.

Casey sighed and was about to go change her clothes when she decided she'd rather stay in her pyjamas. She was comfy and it was hot in the house. If he doesn't like it, too bad. She thought as she ran down past him with a smirk. Derek was about to sit down in his chair and grab the remote when Casey lunged forward and grabbed the remote off the coffee table before he had a chance.

"What are you doing?" He asked with surprise.

"I am going to watch some television if you don't mind." She said as she sat down on the couch and began to flip through the channels with a smile.

Derek stared at her for a few seconds before he grabbed her hand and tried to take the remote from her.

"Derek!" Casey yelled as she pulled away from him, still gripping the remote in her hand.

"Give me the remote." Derek sat up in his chair.

Casey stood up and Derek did the same, standing about a foot away from each other.

"You want the remote?" Casey challenged. "Well too bad." She made a pouty lip as she waved the remote in his face and then placed it behind her back with a grin. "It's mine."

Suddenly Derek jumped on her, shoving her to the couch on her back.

"Get off of me!" She shouted.

"Not until you give me the remote." He said as he straddled her waist with a smirk.

Casey tried to shove him off and move from underneath him but he grabbed her arms and pinned them down above her head.

"Now what are you going to do, Princess?" He said as he leaned towards her face.

"Take the remote! I don't care! Just get off of me, Derek!" She cried.

She was beginning to feel very uncomfortable with how close their bodies were and she suddenly felt very stupid for not changing when she'd had the chance. She hated the feeling of their skin touching. It sent shivers down her spine. We're both practically naked! What was I thinking?

"I think you like this." Derek sneered as he moved his face even closer to hers.

"You're disgusting!" She cringed beneath him as he licked his lips.

He's not going to kiss me is he? Casey thought with fear.

She stared into his eyes for a moment as his face got even closer to hers, not sure what he was thinking, but hoping this was all just a joke. He seemed so serious all of a sudden and it scared her.

What would it be like to kiss Derek Venturi? The thought suddenly appeared in her mind and she recoiled instantly. Eeew! Who cares! He's your step-brother for crying out loud! What are you thinking? You don't want to kiss Derek! It's wrong, completely and utterly wrong! Not to mention GROSS!!

Casey's eyes went wide when she realized his lips were only inches from hers and she was about to say something when she heard a voice from behind them.

"Uh... What are you doing?" It was Edwin's voice.

Thank you, Edwin! Her mind praised.

Derek looked at Casey and then back where Edwin was standing as he slowly moved away from her.

Is that disappointment in his eyes or am I just seeing things? Casey wondered. She couldn't break her eyes from his as he still sat on top of her.

"You two weren't just... uh..."

Casey suddenly realized how wrong this must look with Derek on top of her, both of them hardly dressed, and she quickly tried to explain, "I... It's not what you think, Ed...Edwin..." She stammered.

Derek only grinned, "Casey couldn't control herself. You know how irresistible I am." He winked.

Casey couldn't believe he'd just said that, "You Pig!" She exclaimed. "You're the one on top of me!" Casey couldn't take it any longer and somehow developed some super human strength she didn't know she had and shoved him off of her. Derek crashed to the floor with a thump and Casey stood up as she threw the remote at him. It hit his head and he yelled out in pain, "Hey!"

"Take your stupid remote! It's not worth it!"

He rubbed the sore spot on his head and then looked up at her as she crossed her arms.

"Oh, come on, Casey, you know you liked it." He sneered.

Casey scowled with disgust as she turned to walk away but Derek stuck his foot out and before Casey could react she tripped on it and fell flat on her face.

Derek burst out laughing, proud of his accomplishment.

"DER-EK!" Casey screamed now really angry this time. She grabbed the closest thing to her, which was a pillow, and threw it at him in rage, but Derek ducked and the pillow slammed into her mother's lamp, knocking it over with a loud crash.

"What was that?" They heard Nora call from the kitchen just as she entered the door with George.

Great timing... Casey thought as she shot a worried look at Derek and Edwin.

"I'm out of here!" Edwin said as he dashed up the stairs in a hurry.

George and Nora entered the living room with bags of groceries still in their hands to find the shattered lamp all over the floor.

Nora gasped and dropped the bag as she glared at the two teens, "What happened?"

Marti stood behind them and then quickly ran up the stairs as fast as she could, singing, "Someone's in trouble..."

Casey was still on the floor, propped up on her elbows and Derek was now standing, trying to hide the smirk on his face.

"It was his fault!"

"It was her fault!"

They both shouted at once.

"That was my favourite lamp. My grandmother gave that to me." Nora said as she covered her mouth, almost in tears.

"Casey's the one that hit it." Derek said.

Casey glared at him as she got to her feet. "Mom, I'm so sorry. I didn't mean to hit it. Derek tripped me and..."

"You threw the remote at my head!"

"And you wouldn't get off of me!"

They were both shouting at each other when George suddenly cut through both of their voices, "Shut up!" Both teens stopped immediately and looked at him. His face was red and he had a fierce look in his eyes as he set his bag of groceries on the table. "I cannot believe you two! You're both almost eighteen, which is considered an adult in some provinces, and yet you act like two juvenile children around each other!" He fumed. "When is this bickering ever going to end? You have been living with each other for almost four years now and you still can't seem to get along. Why? Now because of your fighting, you have broken Nora's lamp!"

"George, it's only a lamp." Nora tried to defend them.

"It's not just the lamp that I'm upset about. Don't you see? I am sick of this fighting! Edwin and Lizzie are the same age and you don't see them fighting all the time, do you?" He threw his arms in the air, "I've had enough! For once I would like to see the two of you get along!"

"But, George..." Casey tried to say but he cut her off.

"I want both of you to go upstairs to your bedrooms until I figure out what to do with you."

"You can't be serious, Dad? You're actually sending us to our rooms?" Derek snorted with his hands on his hips.

"Oh, I am serious," George snapped, "Now go!" He said as he pointed up the stairs with his finger.

Casey felt like crying and strangling Derek both at the same time. George rarely got mad like that, so she knew he was serious and it actually frightened her a bit.

What is he going to do? She wondered as she slowly made her way up the stairs, glancing warily at her mother.

Once they'd made it to the top of the stairs, Casey stopped Derek and glared at him, "This is all your fault and you know it!" She whispered harshly.

"Uh, who was the one that stole the remote in the first place?" He whispered back with a smirk.

"Well maybe I wouldn't have done that if you hadn't been such a jerk earlier with the bathroom!" She said as she shoved him with her finger.

"In your rooms, now!" They heard George yell.

Casey took one last fierce look at her step-brother and then walked inside her room as he walked into his, both of them slamming the doors behind them.

I hope you liked the first chapter. There will be more to come soon, when you review because I really like reviews. They make me happy. =]