I don't write many sex scenes. Not because I object to them, but because I am never satisfied with how they turn out when I do attempt them. This is the first one I've liked. Yes, it's OOC. No, it's not canon. If you're looking for mysophobic, emotionally repressed Sheldon, you won't find him here.

He reset the simulation and glanced at the clock. 1:17am. Sheldon fumed. Why was this beyond him? Surely if Penny could do it, he could! Howard and Raj had left hours ago. Penny had retired soon after them. Even Leonard had given up and went to bed around 11pm. He reached for the steering wheel again, determined to master this. Before he could start the program over, the front door opened up.

"Hey Sheldon," Penny said as she eased back into the room. "How are you doing, sweetie?"

He glared at her. "So far I have leveled City Hall, 3 parks, 18 department stores, the Cheesecake Factory and Cal-Tech. Twice." Penny smirked at his frustrated tone and moved over to stand beside him.

"Sheldon, you're over thinking this. You just need to relax."

"Penny, if I could relax, I would!" he groused. "Now, if you don't mind, I have a hospital and several pedestrians to run over."

An hour later he was at his limit. He was no closer to mastering this skill and worse, Penny was watching from his spot. He was sure that if he turned around she would be grinning and laughing at him.

Sheldon almost fell out of the chair as Penny's hands settled on his shoulders. She slowly kneaded his tense muscles. He opened his mouth to protest but quickly closed it as he felt some tension melt away. Her hands worked on each kink in his neck and shoulders and he leaned back into her touch slowly.

After a few minutes Sheldon became aware of another problem. As the stiffness ebbed from his back, it settled in another part of his anatomy. His cheeks grew warm and he wondered how to extricate himself from this situation without alerting Penny to his reaction. Her hands worked down his spine and he almost groaned aloud as his penis throbbed within the confines of his pants. He was so distracted by his arousal, he didn't even mind when her lips spoke close to his ear.

"Better?" she asked, barely above a whisper.

Sheldon was unable to respond beyond a nod of his head. Penny moved around the chair until she was standing in front of him. Sheldon looked up at her with a mix of confusion, fear and need. He watched with wide eyes as she knelt in front of him.

"Just relax," she coaxed.

He watched her hands slide up his thighs and move to his waistband. His lungs began to scream for air, making him realize he was holding his breath. Her fingers unsnapped his khaki pants and lowered his zipper. She worked his erection free and stroked him a couple of times. Sheldon had trouble keeping his eyes focused on her instead of rolling back in his head.

"Penny?" he managed to gasp out. She looked up at him and he was amazed by the warmth in her eyes.

"Do you need me to stop?" she asked.

Sheldon licked his dry lips. He knew she was letting him make the decision for his comfort. If he said stop, he had no doubt she would stop. He could end this now.

"Please," he whispered. "Don't stop."

Penny leaned forward and slid her lips around him. For Sheldon the world stopped spinning. His mind was an almost total blank. All he could think of was the wonderful sensation of Penny. He wanted to reach for her, but was unsure of where to place his hands. He didn't want her to stop. Ever. Sheldon could only watch, mesmerized, as Penny bent over his erection and gave him pleasure.

His head rolled back as pressure began to build in his testicle. He knew he was close. He opened his mouth twice before he found the strength to warn her.

"Penny," he gasped out swiftly. "I'm going to ejaculate soon." Instead of pulling away, Penny sped up. She increased the pressure of her lips and drew him into her mouth fully. Sheldon froze as his orgasm hit. His initial dismay at having his semen in her mouth quickly gave way to astonishment as she licked away every drop. He watched her pull a small pack of antibacterial wipes from her back pocket and wash his member thoroughly before tucking him back into his pants.

Sheldon watched her languidly as she threw away the wipes. She moved around him and patted his shoulder gently before heading to the door.

"Penny?" he called out softly. She turned to face him. "Why?" he asked shyly.

Penny gave him a tender smile. "You needed the stress relief," she said. "Besides, I've wanted to do that since we met. You're an extremely attractive guy, Sheldon."

He blushed as she slipped out the door. When Leonard woke up a few hours later, Sheldon was maneuvering the Taurus through the streets like a pro.