Author's Note: Hello my followers! Thank you all for being so patient. This is my longest chapter and I hope you guys like it. Believe it or not but I didn't know the average penis size so I actually did research for this. Enjoy!

Penny turned around to see Sheldon's face hovering slightly over hers and his pupils slowly began to dilate. "Sheldon?" She asked, feeling almost too giddy knowing that Sheldon was at her door. Wow, did she really just feel that? Talk about cheesy lovesick farm girl. He gulped down as he stared into her green eyes, the silence getting to him that he finally opened his lips, hoping to say something…anything that could get the conversation to progress but he was at a loss for words.

His action was involuntary, his body acted by its own desire and his mind had no objection to it. "Penny, my family and Leonard are asleep and have taken the occupancy of both rooms, perhaps it would be wise to spend my nights at your apartment…for the sake of not disturbing my family that is." Penny kept staring at him. After that intimate moment back at the apartment she knew far too well that his actions were nowhere near acting so was this his way of saying he want to have…well, coitus?

She weakly nodded, her core heated by the mere idea of Sheldon wanting to have sex with her. How would he make love? Her insides twitched at the fantasy. His long strong fingers, all too strong by the constant exercises of the game controls, would toy with her body…exploring every inch of her until she were ready to burst and his fingers would tease her insides. She could feel herself become more wet at the imaginary sensation of those fingers of his penetrating her cave, taking her to the breach of orgasm and then, although this was Sheldon so in no universe would he ever do such a thing willingly, lap up her fluids as she came into his mouth. Oh God, if he could speak scientific equations fast God only knew what those magic lips of his could do during cunnilingus.

She softly shook her head to get those thoughts out of her head and opened her apartment door, Sheldon following after and locking the door, as Penny was usually one to forget to do such things. He glanced around her apartment and gave a sigh of relief. Her apartment was still thankfully up to his standards. The dishes were properly washed, there weren't any clothes on the floor and there wasn't a speck of trash to be seen. Did she keep to his layout for her?

He threw the thought to the side as the back meaning to what he had proposed sank in. He didn't usually pay attention to the double meaning to words considering he thought people would understand the way he speaks the first time. But this was Penny, the alternate meanings to his words could be explored to the edges of the universe when it came to that gutter mind of hers. Did she think he was proposing nights of copulation? Although the idea in itself hadn't come into his mind, especially by the way he had erased his whiteboards with her backside in his office, the germ freak inside him was restraining him from meeting his primitive urges to mate with Penny for hours on end until sunrise.

Although the Big ol' five inside her was telling her to offer to share her bed with him, the scared silent girl, all thanks to the blue-eyed Theoretical Physicist, was terrified to offer something so inviting. What was going on? Hell, she used coffee as an invitation with Stuart, why couldn't she be straight forward with Sheldon? She's never had to be straight forward with anyone really. She usually just used sarcasm or suggestive innuendos but even when Sheldon was around them, he never really quite caught onto the double meaning. Knowing she couldn't bring herself to invite him into her bedroom or anywhere for that matter, she handed him a blanket and a pillow then left for her room, feeling all too regrettable for her action.

Sheldon stared at the blanket and pillow for a moment then peered over to Penny's room where he saw the dress fly across her bed into hopefully her laundry hamper. Did handing him a blanket and pillow mean she had no desire to share her bed with him that night? He thought about that for a long time. She was never one to deny a man her bed, at least not when it came to her countless one night stands or Leonard…he winced for a second. Well, she had lent him her bed once but he has yet to indulge in the sweet scents of her pillows since then. He glanced back to her room. Telling her that handing him a blanket and pillow when the pheromones going on between them were raging was an unforgiveable act would with a chance of 100 to 1 end up with him sleeping in the hall and their agreement...relationship, whatever it could scientifically be categorized as would come to an end and he would be forced to face the possible living hell that was his mother when it came to his lying.

With that in mind he set the blanket out on the couch, obviously still too small for his long body and then glanced back at Penny's room once more, her bathroom light was still on. He turned to the couch then to her room, then back to the couch. He shook his head and made his way into Penny's room. Her bathroom door was closed and the sound of the shower was going on faintly. He wondered why she would be taking a shower at that time when she almost always took one in the mornings, probably to help with her grumpy attitude she had when it came to the break in her sleep. Nonetheless, he slipped into Penny's bed, leaving enough space for her to also sleep in her bed.

Penny pressed the shower head to her vagina and stifled a moan as the water and vibrations sent shivers to her inner core. Her free hand gripped her left breast and squeezed, tweaking and rubbing her nipple into a hard bud. Thinking of Sheldon in such a way had her on edge and knowing he was there on her couch, oh God. She was going to make a mess of that pillow after he left tomorrow. She wanted him. Ask her about this two weeks ago and she would have never thought that she would be masturbating to the thought of Sheldon Cooper's fingers and extremities driving her into countless orgasms. Now that she was, she couldn't imagine a better person to lose herself to in self-pleasure. "Sheldon…" She moaned out as she reached climax and came. Her insides were still pulsing and as she cleansed herself and as she dried herself she knew it would be quite a while until she fell asleep with Sheldon in the next room.

She slipped on a large Hillary 2008 t-shirt then looked at herself in the mirror. Sheldon had seen her many a time in her lousy clothing but now, now it was different. She didn't want to walk out of her room in the morning and have him seeing her look so disastrous. Giving into her pride, she threw the large shirt off of her body and chose a blue tank top and a pair of yellow shorts she was going to wear a few days before but decided not to and ended up forgetting to put away. She tousled her wet hair and brushed her teeth, it would be bad if she kissed him with Thai Food breath….man, she was horny.

She took a deep breath, giving a reassuring look to her reflection for support and then stepped out of the bathroom to see Sheldon facing upward in his typical supine position…in her bed. She was about to say something but although she had grown to love seeing Sheldon, especially recently, she had no desire to hear him shooting straight up shouting "Danger. Danger."

With that in mind she made her way to the opposite side of the bed and slipped under the covers, almost too shocked at the warmth Sheldon created under the covers with his body alone. As she adjusted into a comfortable spot, her arm brushed something that was definitely not close to Sheldon's shirt or thermal undershirt. She stayed still for a moment then glanced over at Sheldon, her arm raised a bit in case he were to wake and she would be forced to calm him down. But instead he still kept a very pleasant face as he slept. She gulped down and then pressed her arm down again and marveled at the feeling of his chest and stomach. If it weren't for his thick layering of clothing, many people could see just how fit he was. He wasn't Hercules but he wasn't Michael Cera either.

Her hand ran over the tiny ridges of his muscles and rested at his small patch of chest hair.

Sheldon stifled his urge to smile at the way her warm and smooth hand felt on his body. She felt wonderful. No, she felt near heavenly. His lil Spock hardened at the way her hand gently rubbed his chest, the inner and very well kept secret pervert inside him hoped for her hand to travel lower to where her hand was well open for landing. He kept his eyes closed for if she knew he had been awake, only the universe could have known how much trouble or…plausibly dirtier trouble he would be in. He laid there quietly as a soft sigh of what sounded like contentment escaped Penny's mouth.

In seconds, he himself let out a moan as well for Penny's leg had come across and her knee was pressed right against his well-endowed erection. A small and very quiet gasp escaped Penny's mouth and just as she was about to remove her leg, Sheldon acted through impulse and grabbed her thigh. His action was something he could not deceive through saying Sleep walking or Night terrors, so he opened his eyes slowly and peered down at the surprised Penny staring back up at him. They were quiet.

Both of them didn't know what to do next. Well, Penny did but she couldn't bring herself to doing so by the way his blue stare held her in place. She might as well give up the whole idea of referring to herself as a big ol' five.

Sheldon gazed over her body, feeling sensations all over his body and if it weren't for his knowledge of human reactions to arousal, he would have thought he had an anxiety attack. He gulped down the development of saliva in his mouth and felt suddenly nervous. When he had gone into her bed, the possible situations of this unfolding were very plausible but although he knew the chances, he had yet to completely plan out how he would press forward if he were ever to do so. Without much experience other than what he had unfortunately seen on the internet or television by accident, he did what came natural to him. He reached his free hand out to Penny's face and took her chin lightly in the crook of his forefinger and thumb. In a swift and practically like the movies motion, he pressed his lips to hers.

Penny's breath caught and she reached out, feeling a bit of her big ol' five coming back, and grabbed onto Sheldon's hair. He groaned a small amount of gratification into her mouth and she moved a bit so she was straddling his body. This was something Sheldon wasn't intending. He gazed up at her, oh what a sight she was. Aesthetically pleasing indeed and even through the dark room he could see her wonderful smile. "Penny?" He asked, sounding all too much like he did when he thought someone's actions were stupid or just weren't going to work.

She glanced down at him and her big ol' five for the moment's time was going at full blast. She gazed at him, feeling still nervous by the way he was staring at her. With a quick move of bravery, her hand went down to his abdomen and skillfully unbuttoned and unzipped his jeans. In no time at all, her hand grazed over the patch of pubic hair and the gift of length that Sheldon hid in those white underwear of his. He was thick. She rubbed her palm over the shaft and felt Sheldon quiver at contact. She went up to the tip and brushed her thumb over it, her core fully moistened by the way it felt on her thumb. The more she brushed it, tapped it, rubbed it, the more her vaginal walls moistened. This alone could bring her to climax. Sheldon caught on to this.

As Sheldon embraced the way her hand toyed with his penis, he also observed her reactions to his genitalia. He was not exactly knowledgeable of what was the preferred length of the sexual partner for women but he supposed eight inches would suffice. As her hand explored his phallus, he gazed down to her shorts. Already he could sense how her body's temperature had increasingly gone up that she was incredibly aroused. As the idiom would say, what's good for the goose is good for the gander or considering their situation, what's good for the gander is good for the goose, he made it his silent goal to make it real good for this goose in particular.

His hand traveled over to the hem of her shorts and pressed one of his palms up against the crotch of her shorts. Penny's hips bucked and her free hand dug into his shoulder for balance. "S-Sheldon…" She moaned and that alone did him in. He thrust up into her hand and pressed harder into Penny's core through her shorts. He was now the only one in control of the situation. Penny's control, of what she thought she had, was wearing thin and Sheldon was bound to bring her to another mind-blowing orgasm.

Sheldon's hand ran up from the crotch to the waistband and then dug deep underneath her panties to the soft moistened core with the small amount of pubic hair to cushion his forearm as his fingers eased their way into her vagina with no trouble at all. Normally this action would kill him inside but surprisingly even the germ freak inside of him was cheering him on his quest to bring Penny to climax. He twisted, he turned, he flicked with his thumb in a number of orders that had Penny so weak that she was now pressing her forehead to Sheldon's as she was nearing an exploding orgasm that even with Leonard, hell, even with Kurt she was never able to experience to this extent.

Weakly in the last few minutes she had before she was going to come all over his fingers, she stroked in a fast enough pace that Sheldon was moaning into her mouth. Both of them were skilled in their own ways and both of them were wearing thin on how much longer they could hold out before they gave in first. After two strokes of Sheldon's thumb to her clitoris, Penny arched back in a pool of ecstasy and moaned out Sheldon's name in passionate agony. Hearing her voice moan his name did him in faster than well, anything and he ejaculated his semen into her hand.

Both of them were worn out and only by touching, not even full blown coitus, just touching. Sheldon, pretty tired from his actions, was still able to reach up with his non fluid covered hand, which the reviving germ freak would wash without delay, and brushed some of the now wet with sweat blonde hair out of Penny's face. She nuzzled her cheek into his chest, not caring for the bodily fluids on either of them and sighed happily.

"Goodnight, Honey."