Hey all! Yes I'm still alive; shocking I know, but true. Sorry for the seriously long absence from updating or posting anything I've been extremely busy and lost my muse for a lot of my stuff, but it's coming back now and I'm working on a lot of different stuff but hopefully will be posting a new multichapter story soon! This is my attempt at a Big Bang Theory story and much like my NCIS story I'll be posting stories as I write them as most will be stand-alone stories but with the established rules.

Disclaimer: I don't now, nor have I ever owned Big Bang Theory. I did not make any money from this story and I don't intend too. All characters and recognisable things belong to Chuck Lorre and Bill Prady.

Summary: When Sheldon breaks into Penny's apartment Leonard has a slightly different reaction than he had in the episode. Established CP agreement.

Warning: Spankings. Severely AU. No Slash, just semi consensual corrective spanking If this is not your cup of tea don't read.

~o~

Leonard pinched the bridge of his nose and pointed angrily back towards their apartment. "Sheldon this is so not appropriate. Get back into our apartment right now," he ordered. He couldn't believe he was having to explain that it wasn't right to sneak into their neighbours apartment and clean.

"How am I supposed to sleep knowing that there is this conglomeration of slovenliness right next door?" Sheldon asked exasperated.

Leonard sighed, "get back to bed now, or I will punish you," he stated. Leonard had been extremely unsure when Sheldon's Mom had first suggested that Sheldon occasionally needed a little hands on guidance. In fact he'd been so uncomfortable he'd tossed the idea aside as ridiculous and then had to call Mrs Cooper up to deal with Sheldon as he was being impossible barely two months later. The terrifying thing was she told him that she wasn't afraid to turn him over her lap if he thought he needed a demonstration of how to do it.

There had been some pretty awful attempts to deliver discipline to his roommate, but eventually Leonard had found a way to curtail most of Sheldon's shenanigans. It was still a last resort, but it at least gave him a way to manage the man child's insanity.

"But Leonard," Sheldon whined.

"Now, don't make me tell you again," Leonard warned.

Huffing, Sheldon left Penny's apartment and returned to the one he shared with Leonard folding his arms over his chest and pouting.

Leonard left Penny's apartment and locked the door behind him returning to his apartment and putting her key in the key bowl. He looked tiredly at Sheldon and pointed towards the bedrooms, "to bed Sheldon." He looked up mentally praying for the strength not to strangle his roommate as he followed him to the bedrooms.

The next morning Sheldon was suspiciously happy causing Leonard to frown. "You're happy this morning," he commented hoping his suspicions were wrong.

"Those geeky bastards!" Came the shout from the apartment across the hall.

"Sheldon Lee Cooper! What did you do?" Leonard demanded.

Penny burst into her new neighbour's apartment, "which one of you creeps broke into my apartment last night?"

Leonard stepped forward hoping to try and convince Penny not to call the cops on Sheldon, "It was Sheldon, but in his defence he really thought he was doing something nice for you," he started.

Penny whirled on Sheldon about to rant at him.

"I didn't break in I used the spare key you gave us," Sheldon defended.

Penny glared, "you were in my apartment, cleaning, without my knowledge whilst I was sleeping!"

"Exactly you were asleep," Sheldon agreed.

"Do you have any idea how creepy that is?" Penny asked. She was beginning to wonder if there was something not all there with one of her new neighbours.

"Not really, I was only cleaning, though Leonard shares your opinion that it was inappropriate for me to do so," Sheldon admitted.

Penny whirled on Leonard then. "You knew he was in there and didn't think to stop him?"

Leonard raised his hands in surrender. "I did stop him. I got him back here and told him to go to bed," he defended. He turned and looked at Sheldon unhappily, "what happened after I went back to bed Sheldon?"

Sheldon pressed his lips together and turned away, unwilling to look at his roommate or neighbour.

"Well Sheldon?" Leonard pressed.

"I told you, who could sleep knowing that just a few doors away from me there was that amount of disorganisation!" Sheldon pointed out.

Leonard pinched the bridge of his nose hard. "I'm sorry Penny, I'll make sure this doesn't happen again. Sheldon will be by to apologise soon, we just need to have a chat first."

Penny was brought up short and felt very confused but she nodded. "Well, um okay, just make sure it doesn't happen again… and I'm taking back my key," she insisted.

Leonard nodded in agreement and picked up the key Penny had given them and handed it to her, "here, I'm really sorry about this."

Penny accepted the key and looked at Leonard not sure how she felt anymore, "is he a bit… special?" She murmured softly.

Leonard looked at Penny, "you could say that," he agreed for the sake of avoiding an argument. "He'll be by to give an apology shortly," he repeated.

Penny accepted that and left the boy's apartment.

"It is the new organisational system you object to or just me being in your apartment!" Sheldon called as she left, "as it's going to come up later."

Penny growled in frustration and slammed the boys apartment door closed, not dignifying that with a response, slamming her own door as she entered her apartment.

"Well that was rude," Sheldon pouted.

"Sheldon Lee Cooper! I cannot believe you went back to her apartment after I specifically told you that it was wrong and to go to bed!" Leonard scolded as soon as both doors were shut.

Sheldon opened his mouth to protest.

"No, I don't want to hear it! Go and get the paddle," Leonard ordered.

"But…" Sheldon started.

"Right now Sheldon!" Leonard interrupted.

Sheldon huffed and stomped off to his room and fetched the dreaded implement returning to the living area of the apartment with the small wooden paddle in his hand. "Leonard please," he tried.

"No Sheldon, you directly defied me, I told you it was wrong to be in her apartment and I told you to go to bed. You ignored me and went back there which you knew was wrong and you upset our new neighbour. How would you feel if someone came into our apartment and moved all our stuff whilst you were sleeping," Leonard lectured as the younger man approached him.

Sheldon struggled to respond to that, looking around the apartment nervously. "Why would anyone need to move stuff? We have the perfect organisational system," he defended.

"That's not the point Sheldon and you know it. Now hand me the paddle, remove your robe, pull your pyjama pants down and get over my lap," Leonard ordered from his place sat in the middle of the couch.

Responding, as he always did, to the authority in his roommates tone Sheldon reluctantly handed over the paddle and followed the rest of the instructions given. He hated doing this, hated being punished like a child, but that had never seemed to matter to his Mom and now didn't seem to matter to his roommate.

Leonard sighed as Sheldon went over his lap, using one hand to hold the genius in place he set the paddle down beside him and started bringing his hand down over the pale globes over his knee. "We don't go into girl's apartments without permission, regardless of whether they are sleeping or not and we especially don't go back in to those apartments when we are told to leave and to go to bed Sheldon Lee Cooper," he lectured as he spanked. "How other people live is not up to you to control. You may only clean for someone else if they specifically ask you to," he continued.

Sheldon, for his part, did his best to take the spanking stoically, not to show it was getting to him, but the repeated slaps of his roommates palm on his behind stung and the sting quickly built up and he soon found himself wiggling and fidgeting.

"Do you understand?" Leonard pressed landing a couple particularly had swats to the backs of Sheldon's thighs.

"Yes! I understand Leonard!" Sheldon gasped out at the awful smacks to his thighs.

"What exactly do you understand," Leonard pressed. This was not his first rodeo so to say and he knew well the importance of getting a specific answer from the stubborn genius.

"I understand that I'm not to go into girl's apartment without permission, especially not when they are asleep even more when you tell me not to and to go to bed and I am only allowed, ow, to clean with they specifically ask me to!" Sheldon repeated as his feet started drumming against the apartment floor.

"Make that anyone's apartment and you've got that right," Leonard amended as he moved his focus to Sheldon's sit spots, wanting to make sure the physicist remembered this spanking every time he sat down for some time. "I am never ever going to have to have this conversation with you again am I Sheldon?"

"Ah! No, you're not Leonard," Sheldon answered quickly. His posterior was getting uncomfortably warm now and he couldn't help his cries of pain as tears welled up in his eyes. Oh how he hated this.

"What about directly defying me, are you going to do that again?" Leonard asked.

"Ow, ow, no! I won't defy you again Leonard," Sheldon insisted.

"Hmm what does it mean if you defy me?" Leonard pressed.

"Oh oww, that I've been naughty," Sheldon whimpered, on the edge of crying.

"And what happens to naughty little boys?" Leonard continued.

"Naughty ow oh ow, naughty little boys get their bottoms spanked," Sheldon admitted as he started crying.

Leonard paused and picked up the paddle. "Yes, yes they do," he agreed. He rubbed the paddle on his roommate's bottom so he knew what was coming. "Now I'm going to paddle your bottom to make sure this never happens again. First though you need to tell me why you are going to get paddled."

Sheldon let out a whine and sniffle yelping at the smack to the back of his thigh that his whine earned him. "Owwie, I'm getting paddled because I went into Penny's apartment after you told me it was wrong and sent me to bed and cleaned," he admitted.

"Exactly," Leonard agreed. With that he started bringing the paddle down over and over again, hoping to make a very firm impression on his childish roommate. He could hardly believe his audacity, okay that wasn't true he could very much believe that, but still he needed to save Sheldon from himself here. Leonard did not want to imagine that Penny might have phoned the police but it was more than possible, and Sheldon would make some remark and end up in a jail cell.

Sheldon yelled and howled at the paddle swats, no longer even trying to keep stoic as the evil wooden implement from hell rained torture down on his poor posterior. He couldn't even say he didn't deserve it because he did. It was all he could do to keep himself laying over his roommates knee and not throw his hands back to block or try and get up.

Leonard moved the focus to Sheldon's sit spots nailing them hard and fast ignoring the sobbing and frantic wiggling coming from the man, intent upon completing this lesson. Finally he felt Sheldon give in and go limp over his knee and he wrapped up the spanking with ten hard swats to the centre of each now bright red cheek. He rubbed Sheldon's back for a moment before easing his pyjama pants up and helping him up and guiding him to the one free corner in the apartment.

Sheldon wailed as the swats focused on that awful tender spot between butt cheek and thigh and stayed there, burning in an awful deep aching sensation. Eventually he lost the energy to kick and squirm as he was and just went limp over Leonard's knee sobbing his heart out. The final swats upped the intensity of his sobs but little else. He hissed as his pyjama pants were pulled up over his burning behind and he was lead to the dreaded corner.

"Hands on your head Sheldon," Leonard instructed much more softly now.

With a sob Sheldon raised his hands and placed them on his head pressing his nose to the corner despite the awkwardness of the position.

Leonard left Sheldon in the corner and returned the paddle to its draw in Sheldon's room. Pottering around whilst his roommate calmed himself down in the corner.

Penny was sat frozen on her couch, barely able to believe what she'd heard from the two men's apartment. Her mind could not process what she had heard. She had to wonder just what kind of relationship the two had, though Sheldon had shown no interest in her whatsoever, Leonard had. Her mind could not wrap around what she'd heard and she needed answers.

Sheldon slowly calmed down in the corner, grateful for Leonard's lack of insistence on cuddling as his Mom did. He was not a baby in need of coddling, he was a grown man and could calm himself thank you very much.

Leonard cleared his throat, "you may leave the corner now and go straight over to Penny's and apologise to her. Yes you can put your robe back on first."

Still sniffling slightly Sheldon nodded and went to pick up his robe, wrapping himself in it before slowly shuffling over to his new neighbours apartment. Knocking on the door in his usual way.

Penny actually had to unfreeze herself to be able to answer the door, "hi Sheldon," she greeted. The righteous fury she'd felt earlier had all but vanished with what she'd overheard.

"Penny, I am deeply sorry for entering your apartment without permission whilst you were asleep and cleaning. I will never enter your apartment again without your permission nor will I even attempt to clean unless you specifically ask me to," Sheldon apologised sincerely.

Penny looked at the dishevelled boy looking at her so earnestly, with eyes still red from crying and tear tracks running down his face. All she could feel was sympathy for him, "aww you are forgiven Sweetie," she told him giving him a hug.

Leonard watched from the doorway of his apartment and tried to hide a smirk at Sheldon's panic at being hugged.

Sheldon stiffened at the hug and looked around at Leonard in panic not knowing what to do. "What are you doing? You can't hug me," he protested.

Penny just laughed and let Sheldon go, "whoops sorry, no more hugging."

"Go wash your face and get dressed for today," Leonard instructed Sheldon.

Sheldon was all too eager to follow those instructions and went back to his apartment as fast as he could.

Penny looked at Leonard with a raised eyebrow. "So… going to explain that one?"

Leonard sighed. "Sheldon is… Sheldon is too smart for his own good, he needs a firm hand to keep him from doing stupid things, stupid things like breaking into neighbours apartments whilst they sleep and cleaning. His Mom insisted it's the only way to deal with him and it makes living with him a lot easier."

Penny frowned a little, "I still have lots of questions."

Leonard glanced back into the apartment, "I'm sure you do, but can I ask that you wait to ask them, it's embarrassing enough for him."

Penny sighed, "sure, but you owe me answers buddy."

Leonard chuckled, "I'll do my best," he agreed easily.

~o~

So there you go, my first ever Big Bang Theory Story, let me know what you thought! I'm not sure whether I'll do another or this will be the only one but if you want more review and let me know!