A/N : This is my first TBBT Fanfic, so please be kind. I'm currently working on a few multi-chapter TBBT fics, all of which are Shenny based but this idea came to me this morning and I just had to get something down. A few hours later and I have a six page chapter. This is the start of a short (well, short for me) dribble of an idea and I'm hoping it will be four or five chapters long at best. While I'm no stranger to fanfics I am totally new to this fandom. All reviews, good or otherwise, are gracious received (I won't learn if I'm not told where I'm going wrong) Just a heads up though, this is totally unbeta'd just straight from my mind to the net. Hope you all enjoy.

Disclaimer: If they were mine, things would be different

What dreams are made of.

Part One – Train.

Sheldon Cooper smiled as he settled into the seat beside the window. He wiggled just slightly, making sure he had optimum cushioning of his backside and his back would equally benefit from the lumber support the chair offered. He was happy. He loved trains.

When he was first informed by Dr Gablehauser he would be giving a lecture at the University of California at San Diego, Sheldon had been less than pleased. He hated public speaking and as much as told his boss that he wouldn't participate in any attempt by Caltech to 'Pimp him out'.

Dr Gablehauser simple didn't give him an option but did offer a slight reprieve by saying the department would pay for the train travel. That sealed the deal.

Now Sheldon felt happy in his first class seat and was ready to enjoy the journey. He had been so excited about the train he had failed to achieve his maximum required sleep the previous night and all too soon, the gentle rocking of the train lured him asleep.

A particular rough jolt jarred him from his nap and he snapped his eyes open. Before him stood the train conductor.

Sheldon's gaze widen when his eyes met with the sparkling green of his neighbor. He quickly did a full inspection of her. The hem of her tight, dark navy skirt was incredibly higher than that of most female conductors and his lips felt suddenly dry at the expanse of tanned, toned leg on view. Her white blouse sleeves were rolled up to her elbows and the top three buttons undone, inexplicably drawing his eye to her cleavage. The red silk scarf knotted slightly off center at her neck gave a flash of color to her outfit, and her hat sat crookedly on her head with a mass of golden curls over one shoulder.

"Penny, what are you doing?" he asked disbelieving.

"I'm waiting to clip your ticket," she smiled to him, holding her hand out.

"Penny, conductors don't 'clip' tickets anymore. All transactions are performed on tablets now," Sheldon informed her wisely.

"Hey, what do I know? If your fantasy not mine," Penny smirked to him.

"Penny!" Sheldon exclaimed. "I can assure you, you are not…"

"Sweetie," Penny interrupted him, lowering her right hand, which had been waiting for his ticket, to the arm rest of his chair. Using it as leverage she leaned over, giving Sheldon an excellent view of what lay encased in white lace under her shirt. "There's nothing wrong in a little fantasy every now and then."

Sheldon audibly gulped, unable to take his eyes from down her shirt. "Penny…"

Penny stood straight again, a low chuckle emanating from her before she composed herself. She again held out her hand and said, "Ticket please."

Sheldon was just about to repeat himself and tell her how incorrect she was, when she raised an eyebrow in challenge. He sighed deeply, but nonetheless reached into his pocket. Finding nothing there, he pushed his hands into each of his pants pockets before withdrawing them and coming up empty.

"I don't understand," he grumbled, his eyes landing on the piece of paper before him that held his reservation details. He handed this to Penny, hoping this would suffice.

Penny took the paper from him and her eyes scanned it quickly. "This says Dr Leonard Hofstadter has violated the Roommate Agreement, Section 8, Subsection C. by calling dibs on the neighbor before Dr Sheldon Cooper even gazed on said neighbor and therefore had not given Dr Sheldon Cooper the opportunity to argue his rights."

"What?" Sheldon said disbelievingly, snatching the paper back from her finger. His eyes roamed over the paper and groaned as he read exactly what she had said.

"I don't understand," he moaned.

"I think it means you like the neighbor as well," Penny grinned.

"No," Sheldon returned sharply. "I don't understand where my ticket is."

Penny's face became serious again. "Are you telling me you don't have a ticket, Sir?"

"Yes, of course I have a ticket. I just don't know where it is," Sheldon explained with frustration.

Penny stood back slightly. "I think you'd better come with me, Sir," she said deadpan.

"Penny," Sheldon groaned.

"Dr Cooper," she said firmly, holding her arm out, indicating which direction he should go.

Sheldon exhaled loudly but stood and moved out into the aisle beside Penny. Standing beside her he noticed her tall stature, the usually seven or so inches height difference gone as she stood only a few inches shorter. His gaze fell and landed on the high heels of her pumps which accentuated her legs even more. He looked back to her and caught the mischievous gleam in her emerald orbs, mere inches from his own.

"I think you'd better follow me," Penny breathed out and swiftly turned with amazing grace in such high heels and began moving down the aisle. He watched briefly as her frame swayed sensually between the rows of seats before her head turned back to him and she flashed him a provocative smile and Sheldon found himself hurrying after her.

When they came to a connecting door, Sheldon reached out and grabbed Penny's hand, stopping her from going any further. "I'm sorry, Penny, but I do have a ticket. I'm just not sure where it has gone."

Penny turned to face Sheldon and her face showed some pity for the tall physicist. "I'm sorry, too," she sighed before that cheeky twinkle gleamed in her eyes again. "I'm sure there is something we can do to stop you from getting into trouble." As she said this, her hand reached up and brushed at a wrinkle on Sheldon's red flash t-shirt before she gently place her hand against his chest.

Sheldon's eyes widened in surprise. "Are you propositioning me?"

Penny chuckled low in her throat and Sheldon suddenly felt very uncomfortable. She leaned into him, pressing her chest against his and lifted her head slightly so she could whisper into his ear. "You know what I want, Sheldon," she said seductively, her hot breath dancing over his sensitive skin and Sheldon shuddered.

Sheldon stepped back from her, his back hitting the compartment wall behind him in the small confines of the train corridor. "A job that pays above minimum wage, a solid acting career, a car without a check engine light that's permanently light…" Sheldon listed.

Penny huffed in anger. "Sheldon," she moaned, her eyes narrowing to him slightly. She quickly shook herself and closed her eyes, something he had seen her do when she wanted to get 'into character'. When she opened them again, she bit down on her lower lip seductively. "You know what I need, Sheldon," she rephrased.

"Oh," Sheldon exclaimed, his eyes wide as he suddenly understood her. His face became stern as he shook his head. "I'm not gonna have coitus with you, Penny."

"I know," she grinned back.

"So, what do you want?" Sheldon asked confused.

"You decide. It's your fantasy."

"Stop saying that. It sounds dirty," Sheldon grumbled.

"Sweetie, you can admit to yourself you may not be as Homo Novus as you think you are. Everyone has desires, has needs, acknowledging that applies to you will not end the world," Penny smiled gently to him.

"Of course I have 'needs'," Sheldon admonished. "I just try to ignore my baser urges so I can fulfil my scientific goals. That doesn't mean I don't act upon them every now and then."

"So, I'm guessing this is gonna be one of those times," Penny murmured.

"Why would you think that?" Sheldon asked.

"Why else would I be here," she returned with a knowing grin and a shrug of a shoulder.

Sheldon exhaled dramatically. "I suppose you are right."

Penny giggled a little before she returned her hand to his chest.

"Penny," Sheldon started, his voice low and timid. "I'm not sure I can do this. I don't want to disrespect you."

"Oh, sweetie, that's so sweet," she gushed, her hand moving up to his neck and then higher until her thumb grazed his cheek and her fingers caressed behind his ear. Sheldon shuddered at her touch, amazed this simple movement created such a strong sensation within him. She again pressed against him and lifted her lips to his ear. "Its ok, honey. No one will ever know. I'm not really here anyway."

She finished her sentence by pulling his lower lobe into her mouth and grazing her teeth against his skin.

The ripple this had on his body was instant and before he could think again he moved.

His hands mimicked hers as they lifted to her face, four fingers of each hand delving into her hair behind her ears, and his thumbs grazing her cheeks as he guided her mouth to his. The second his lips touched hers he felt a spark of something light within him. Her soft, pliable lips moved under his as he manipulated them, dancing over them gently before returned with more force. He felt her open her mouth and he followed, not sure who was leading and who was copying as they shared what he was sure was called an open-mouth kiss.

He felt her hands move across his shoulders and around his neck as their bodies pressed closer together, the feel of her chest tight against his stirred something within him he'd denied for a long time. He moved his own hands away from her face, his fingertips dancing lightly as they slid down her body, his thumbs ever so slightly grazing against the plumb sides of her breasts before his hands settled on her hips.

He pulled his lips from hers, struggling to get breath into his lungs as she smiled lazily at him, a finger stroking the back of his hair softly. He licked his lips and watched as her eyes lowered to observe the movement. He felt, rather than heard, her moan and wondered for a second if something was wrong. When she repeated his movement to her own lips, he found he moaned as well and know immediately why.

The image of her glistering tongue would stay with him forever, he briefly thought, as he crashed their lips back together. This time he demanded entrance to her month with his tongue probing at the seam of her lips. She opened almost immediately, but still let him dictate how they kissed. He grazed his tongue against hers, amazed at how sensual it felt, how natural it seemed when she mirrored his touch. He probed deeper, wanting all of her, all she could give, a hand moving back up to cradle her head, to keep her as close as he could, to stop her escaping this kiss.

He pushed against her, wanting, needing to get closer still, and she moved with his suddenly force, stumbling back to the wall behind her. Sheldon didn't break their kiss, just followed where she went until he held her against the wall, the knuckles of the hand holding her head scrapping against the hard surface.

He could feel her tremble against him and he smiled against her lips. He changed the angle of their kiss, retreating with his tongue to lick gently as the fullness of her lips, before darting back inside to flick his tongue against hers.

He felt Penny move her head and he relinquished her head. The sound of her hard panting sent another shock wave through his body. He did that. He made Penny pant like she hadn't breathed in hours.

"Oh God," she breathed out heavily.

He again grinned as he placed open mouth kisses along her soft skin. His eyes darting up to see her eyes closed and her mouth open slightly in something he like to think as pure ecstasy on her part. He kissed down her neck, searching for her pulse point, eager for some reason to have her pounding carotid artery between his lips. The feel of her heart beating rapidly against his chest echoed with the throb of his penis, making him feel light-headed.

His lips brushed against the silk of the scarf which encased her slender neck and he wished beyond reason it wasn't there. In the next second, magically, the offending material was gone and Sheldon wrapped his mouth against her pulse point, licking and biting at her tender skin.

Penny moaned loudly and her hips bucked against his which, in turn, made him growl against her. Yes, growl, he couldn't believe that noise came from him but it did. He felt himself harden in his pants and when he felt her buck against him again, obviously trying to find some release for herself, he pulled back.

Penny whimpered at his movement and her questioning eyes met his. "I don't want to mess in my train pants. These are the only ones I have," he said, amazed at how hoarse his voice sounded.

At her smile he gripped her hips tightly before turning her quickly so her front was now pressed against the wall. She turned her head to side, her eyes questioning him again. "I need control," he answered simply.

"Of course you do," she grinned back to him.

His hand moved to the collar of her shirt and pulled down slightly. Thanks to so many buttons being left undone, her shirt moved with him, exposing the back of her neck for him. He pressed against her again, his lips flying with butterfly kisses over the back of her neck and the exposed skin of her shoulders. When she again bucked her hips back into his, he lifted his eyes to glare sternly at her. She batted her eyelashes innocently at him and he moved his hand to grip her hip, holding her away from him.

She again groaned and he gripped tighter as his lips returned to her flesh. His mouth moved up the side of her neck until it found hers again and his kissed her fervently, his tongue demanding entrance immediately. The few inches height advantage he had over her came in useful as he devoured her mouth with his, tracing every part of her with his tongue, cataloging each whimper and moan she made and before he knew it, his penis was pressed against her bottom and he was rocking gently in time to the throbbing in his pants. His fingers gripped with force against her hip and a part of his mind wanted to apologize for the pain he must be causing her, but when she pulled her lips from his and groaned loudly he knew he didn't need to. He took her lips again, not wanting to be apart from her for one more second, his tongue dancing with hers in a way that reminded him of some of their more vocal arguments: He pushed her and she pushed right back

He felt her fingers brush against his at her hip as she fought to pull her lips from his again.

"Sheldon," she rushed out, breathless and panting hard. "Wake up."

"Huh?" he answered, never wanting to remove himself from the softness of her skin.

"Wake up, Sir," she repeated, this time louder.

Sheldon opened his eyes abruptly, the stark lighting of the train carriage brutal for a moment as he widely looked around.

Penny wasn't there. In her place was a short brunette, her hair limp around her shoulders and her conductor's uniform regulation and boring.

"San Diego is the next stop, sir," she said kindly.

"Thank you," Sheldon answered automatically, before looking widely around the carriage for Penny.

Of course she wasn't there, Sheldon acknowledge, it was just a dream. Just a fantasy.

He moved in his seat to begin gathering his belongings when he suddenly stopped. Looking down he exhaled loudly at the sight of his very obvious erection. "Oh no," he groaned.