So I decided that I would write a sequel to the Cooper Hofstadter Replacement Theorem after having so may requests! I guess it can be read without reading its predecessor, however Sheldon will probably seem extremely OOC haha hope you enjoy and don't forget to shoot us a review!

Penny walked over to the kitchen table and placed a plate in front of her now 16 year old daughter Lilly, who was painting her nails. 'Toast. And Lilly, what have I told you about painting your nails at the table?' she said before turning around to put the juice carton back in the fridge.

'Whatever it was I wasn't listening.' Lilly smirked, going back to continue painting her nails. Penny just rolled her eyes in annoyance; obviously it was going to be one of those days with one of her three hormonal children.

'Mum! Where are my soccer boots?' Stephen, her youngest son, cried walking into the kitchen whilst struggling to do his school uniform tie.

'Where were they when you last had them?' Penny asked and Stephen shrugged.

'On my feet I guess. Can you help me find them...'

'And by help you mean do? What did your last slave die from Stephen? You're 12 years old now, you need to learn to be self sufficient.' Penny said walking towards the kitchen door and then clearing her throat. 'OLLIE BREAKFAST!' she yelled. On the receiving end of her call was her husband of nearly 20 years.

'Congratulations Penny, you've woken up every Oliver in the world,' Sheldon said, kissing his wife's cheek and walking towards Lilly, 'ahh... purple nail polish today. Nice.. it gives you the best I've slammed my fingers in the car door look.'

'Audi or BMW?' Lilly said sarcastically as she waved her hands in order to dry her nail polish faster. As she was doing this Ollie entered the room. 'Morning Ollie.' she smiled. Ollie looked at his younger sibling and blinked twice before mimicking her hand movements.

'Morning Lils.' He said before turning his attention to his father, who had just sat down with a cup of jasmine tea, 'Dad...'

'Nope.' Sheldon said, cutting his eldest son off before he had even started.

'You haven't even heard what I've got to say yet!'

'I don't have to son... I'm already anticipating that it begins with "Can I have".'

'Wrong... it begins with "Can you lend?".' Ollie grinned.

'And they both end with no.' Sheldon said, sipping his tea.

'Aww come on dad... I need to borrow your new laptop.'

'I gave you my old one.'

'It doesn't work.'

'Well neither do you. That makes you compatible.' Sheldon said unamused as a typical Monday morning played out before him. His 18 year old son would be asking for something instead of looking for a job or applying to college, his 16 year old daughter would be rebelling and his 12 year old surprise bundle of joy would be looking for something that he needed just before school.

'So what time am I booking the restaurant for tonight?' Penny asked leaning against the kitchen counter and sipping her own cup of coffee.

'What... you didn't tell me we had plans for tonight.' Sheldon frowned.

'I left a note on the fridge, I got your PA to give you a memo and I even wrote it in lipstick on the bathroom mirror.'

'I need more than hints Penny, you know that.'

Penny looking at him unamused, 'I hope my next husband has more than your sense of humour.' she said taking another swig of coffee from her mug.

'But I've got to look at polymer chain reactions in the lab tonight... why don't we go out tomorrow?'

'Alright,' Penny sighed and Sheldon blinked at his wife.

'Excuse me?'

'I said alright.'

'Stop it.' Sheldon said, holding his hands up, 'Stop playing the guilt trip on me. OK if I don't do this work tonight I might lose the grant and then I can't get funding and there goes part of my income for these next few months.'

'All I said was alright.'

'Stop it Penny... I know you must be really upset but just stop with this guilt thing you've got going on!'

'Sheldon, all I said was alright, I'm really not upset!' Penny cried.

'Mum! Soccer boots!' Stephen yelled, running back into the kitchen.

'Didn't you hear me Stephen? Take more responsibility for your belongings!'

'Hey! Why are you angry with him and not with me?' Sheldon asked and Penny rolled her eyes at her husband.

'Because with Stevie there's still a point.' she smirked and Sheldon threw his hands up in despair and walking out the kitchen. Meanwhile, Oliver pulled out a chair and gestured for his mother to sit down.

'Mum, you know you really are too good for him.' he said.

'I know... but you still can't borrow his laptop.' she said smugly sitting down, to which Ollie let out a huff, 'look if you really need a computer, why don't you borrow Stevie's or better yet; get a job and save up for your own.'

'Effort mum!' Ollie sulked, biting into his toast.

'What are you going to be using it for anyhow.'

'Personal use.' Ollie said, trying to shrug it off but Penny just raised her eyebrow. She knew boys, especially 18 year old hormonal boys.

'You're not going to be using it to chat up girls on the internet again are you? Cause last time that didn't work out so well for you did it.'

'Oh yeah, I remember... it turned out that that Isabella girl was actually some 40 year old man from Colorado.' Lilly snorted.

'Can it Lilly!'

'Bite me Oliver.' Lilly said poking her tongue out at her brother.

'Both of you stop it.' Penny sighed.

'Besides,' Ollie sighed, standing up and walking to the kitchen door, 'if I did happen to meet a girl on the internet and we did hit it off... perhaps she and I would get married and then we would get our own place and I would finally grant dad's wish and move out!' Ollie said, raising his voice towards the end in order for his father to hear the conversation.

'LAPTOPS HIDDEN UPSTAIRS IN THE SPARE BEDROOM WARDROBE!' Sheldon's voice rang out and Oliver smiled and gave a thumbs up to his mother, who just shook her head in amazement.

'Mum, I still can't find my soccer boots!' Stephen said in annoyance. 'Just tell me where you put them.'

'I haven't put them anywhere... but check the shed just incase.' Penny grinned. She looked at her dysfunctional family and as annoying as they sometimes were, she wouldn't trade them for anything in the world. The Cooper family had been living in their current house for the past 12 years and Penny could still remember falling pregnant 3 months into hers and Sheldon's marriage. She was 25 when she gave birth to Oliver and it didn't seem so long ago that she and Sheldon had had their low key wedding. Things had definitely changed a lot since they had married; for one thing, Penny had taken a step back from acting and whilst she still did a few projects here and there, her main priority was being a mother to her kids. She was still recognised now and then for being the star of Broadway's "Frozen" but for now she liked her low key job of being an acting coach at the local community college. Penny smiled to herself as she looked at each of her kids. When Lilly had been born, both she and Sheldon decided to move out of apartment 4A and into a small house that was the perfect size to rear two children. They hadn't expected that she would fall pregnant again as Sheldon had had his mind set on only having two kids: naming them Oliver and Lilly. So naturally when she had fallen pregnant with Stephen, Sheldon had demanded that he be named after his idol Stephen Hawking; it also meant that they had to move again. And so they did - to their current house in Pasadena's more suburban areas. Penny looked at her family and smiled, proud that she had managed to produce such beautiful kids. 'Alright! Now Stevie, Lils... get your asses to school and Oliver... find a job or college to go to!'

'And how do I do that with out a computer?'

'Just do it.'

Penny looked at the cookbook she had in front of her. What she had been trying to produce from it most definitely was not going to plan. Tasting her cooking, it tasted vile and as a result she ripped the page out of the cook book. 'Didn't sound nice anyway.' she told herself.

'Hey mum.' Stephen smiled as he walked in.

'What is that?' Penny asked looking at the item he held in his hands.

'It's a rabbit.' Stephen smiled, placing the large cage on the island in the kitchen.

'Yes I can see that Stevie but what is it doing here?'

'Well I wanted a rabbit, so I bought a rabbit.' Stephen grinned.

'You didn't ask mine or your father's permission now did you? Besides you know Zazzles will go for it.'

'Mmm I'm rebelling and as for the cat... let's just say I'll keep Trixie, that's what I've called it, out of the way.'

'A rebel with a rabbit.' Penny raised an eyebrow.

'Well you told me to take more responsibility.'

'I say a lot of things. I told your father on his bachelor night that he looked good in his Flash Gordon costume. Now... take it back to the shop.'

'But... if you make me take it back, I'll never believe anything you say again!' Stephen said and Penny mentally cursed him for being the brainiest of her children. Stephen was definitely from Sheldon's end of the gene pool. 'I'll become aimless and remote and my school work will suffer.'

'And he'll become like Oliver.' Lilly added, walking into the kitchen and grabbing an apple from the fruit bowl.

Penny twitched her nose and looked at the rabbit, 'Welcome to your new home. Just keep it away from the food and the cat Stevie.'

'Yeah... we don't want to kill it on it's first day.' Lilly laughed before muttering to Stevie, 'And I wasn't referring to the cat.' Stephen laughed at his sisters remark and high fived her.

A few hours later, the whole family par Sheldon was sitting at the dinner table, picking at their dinner. 'Lil stop admiring your reflection in your spoon. You're beautiful.' Penny sighed.

'Nah... keep trying to catch up on your beauty sleep and then that spoon will really work in your favour.' Oliver snickered, to which Lilly kicked him.

'Mum, what actually is this?' Stephen asked as he poked his meal with his fork.

'Toad in the Hole. A classic British dish that consists of putting sausages in a batter mix thing. I saw it on the TV and thought I'd give it a go.'

'I'm failing to see where the sausages are in this.' Stephen said, curling his lip up as he poken around some more.

'That's because I didn't have any sausages on hand to put in there,' Penny smirked.

'So it's just... hole?' Lilly grimaced.

Penny opened her mouth to respond but Sheldon's voice rang through, 'Hello,' he sighed, hanging his coat up on the back of the island chair. Penny looked at him and got up before shaking his hand.

'Good evening, my name is Penny Cooper and these are your children Lilly, Oliver and Stephen.'

'Hi.'

'Hi.'

'Hey.'

'Alright, alright... I know I'm late and I'm sorry. Lots of annoying people down at the labs today... oh and er don't ask me what sort of day I've had,' Sheldon paused, waiting for a response but upon receiving none, he continued, 'But I'm going to tell you anyway. In one word to sum it up: bloody awful.'

'That was two.' Oliver said.

'And I've got two for you.' Sheldon said, pointing an annoyed look at his eldest son, 'Dare I ask: is there any dinner for me?'

'That's six words.'

'It's on the kitchen counter Sheldon,' Penny said, taking a sip of wine. Sheldon nodded and walked over before stopping short when he saw the rabbit in it's cage.

'Er Penny... I think it needs to go in for a bit longer.' He called out.

'No that's Stevie's new pet. I can quite assure you that your dinner is cooked to perfection.' Penny called back and Sheldon sighed before picking up a plate and putting his dinner onto it and then going to join his family at the dinner table.

'Stephen can you put that rabbit away please... you're giving me the creeps.' Sheldon said as he struggled to eat his dinner. Stephen had taken the rabbit out and was stroking his head as he sat opposite his father whilst he ate. 'You remind me of some sort of Bond villain.'

'Have you noticed anything strange about that rabbit?' Oliver asked.

'Yes... it's been in my house from when Stephen came home from school and it hasn't asked me for money yet.' Sheldon said, eyeing the rabbit before deciding he couldn't stomach any more of Penny's mystery meat cooking.

'Nah dad... I swear he looks at me funny.'

'You should be used to that by now Ollie,' Lilly said, patting his head and walking away.

'I think he's evil.' Oliver looked at his father and Penny smiled to herself at the ridiculousness of their conversation.

'Your father isn't evil Oliver, just a bit weird perhaps.' She said before picking up the plates and clearing the table.

Sheldon got up and followed his wife into the kitchen before wrapping his arms around her waist and kissing her cheek. 'Despite my weirdness Penny, you know you'll never find a man who's more of a sucker for you than me.'

Penny smiled and turned around, placing her arms around his neck, 'And you know that you'll never find anyone else who will have you.' She grinned, accepting a deep kiss from her husband.

'Ewww! Get a room!' Lilly cried.

'Yeah, I think I'm gonna barf.' Stephen gagged. Penny rolled her eyes and kissed her husband again.

'Honey, let's go away for the weekend... you and I.'

'Where do you want to go?'

'Oh I don't know, somewhere nice and somewhere that will be meaningful.' Penny sighed happily.

'Well let's plan it tomorrow. I just want to have a nice night in with my wife and the mother of my kids tonight.' Sheldon said kissing her again. He was so lucky to have Penny as his wife. He could barely remember the man he used to be. It seemed like a distant memory now and he was grateful. He disliked what he used to be and his family, although they irritated him at times... he wouldn't give them up for anything. All he had to do now was find a place to take his wife for a romantic weekend away...

So... first chapter of my sequel is done! So excited to write some funny dysfunctional story lines for the Cooper family! Let me know what you think and I'll update as soon as I can! xx