I do not own The Big Bang Theory. I do own the computer this particular story was written on, though.

I wrote this due to the encouragement of a friend who shall remain nameless (*cough* Rene *cough*). I'm pretty damn proud of it.

I should warn you, this involves male penetration, not female. If you are uncomfortable with that, you might not want to read on.

It all started because Sheldon was bored. He was once again on a forced vacation and Penny wouldn't take him to the train store because she had to work. So, he stole Good Luck Bear.

Penny decided to even things up by stealing his Flash costume. She snuck in while Sheldon was in the shower. Leonard made a feeble attempt to stop her, but really, he wanted nothing to do with their prank wars.

Penny rummaged through Sheldon's closet in vain. It wasn't there. She huffed angrily and started searching his dresser. She tried to hurry, knowing time was short. She opened the last drawer and shifted through the thermal shirts until she found something she wasn't expecting.

Penny stared for several seconds, sure she was not seeing what she thought she was seeing. She actually had to touch it with her finger to believe it was real. Penny heard the shower shut off and she quickly slammed the door shut. She raced out of the apartment, not even stopping to answer Leonard when he asked what she had done. She rushed into her own place and locked the door behind her.

Sheldon walked into his room and detected the faint odor of green apples. Penny had been in his room! He looked around carefully, confident she would never find her bear. Nothing looked amiss at first. Then he noticed the edge of a sleeve sticking out of the bottom drawer. Slowly, with a deep sense of trepidation he opened the drawer. Everything was mussed up.

NO! Nononononononono! Embarrassment flooded him. Penny had seen. She knew. What would he do? She would tell everyone! His privacy was gone! In that moment he hated her viciously.

Xxx

He would deny it. He would tell everyone it was her attempt to get revenge over her bear. He waited for someone to say something. He would destroy her credibility.

Except no one said anything. No jokes, no stares, no teasing. After a week he realized she had told no one. Nor had she teased him. She treated him the same as she always had. Finally after a second week had passed, he approached her.

Knock, knock, knock. Penny?

Knock, knock, knock. Penny?

Knock, knock, knock. Penny?

She opened the door with a smile and he held out her bear. "I am returning your property."

Penny took the bear with a sigh of relief. "Thank you, sweetie!"

"May I come in," Sheldon asked. Penny stepped back and Sheldon moved to stand by the couch. He twitched and took a deep breath. "Why didn't you tell anyone? About what you found?"

Penny blushed and quickly shut the door to give them privacy. "I am so sorry, sweetie. I know you are probably really mad at me, but I swear I would never tell anyone about that!" She set her bear down and twisted her hands together. "Honest, Sheldon. I would never betray you like that!"

"I have been expecting you to tease me. Or for others to," he admitted softly.

Penny bit her lip. "Sheldon, this is not something I would ever tease about. This is a very private part of your life, and I'd be a real bitch to do that. Besides, there's nothing wrong with being gay."

Sheldon shook his head. "I'm not gay." He blushed and looked down. "I am not attracted to men. I am heterosexual."

Penny frowned and opened her mouth, only to close it again quickly. She shook her head, it was none of her business.

Sheldon sighed. "I like having my prostrate manipulated," he admitted shyly. He was certain Penny would keep his secret, so he sought to set the record straight. "It increases my pleasure during masturbation."

Penny was astonished he was telling her something so personal. Sheldon did not open up about his private life often. She was afraid to ask questions and make him clam back up. She tried to be soothing and calm. "You are not a virgin like the guys assume, are you?"

Sheldon sat on the arm of her couch, which just proved how unusual this entire conversation was. "My first time was in Germany while I was visiting as a lecturer. She was an art student I met in the library. It was …messy and over very quickly. Neither of us wanted to repeat the endeavor."

Sheldon's focus turned toward the past. Penny watched him and felt a surge of affection greater than she usually felt. "My second time was with another guest lecturer. Frederick was the one who taught me about the prostrate. I found the encounter mostly disagreeable. It was not pleasant, except for the end. I had a couple of encounters while working on my second doctorate. All three were with women, and all three were disastrous. One was after a way to make her boyfriend jealous. One wanted me to …um, choke her. One ended in the middle of coitus when I, in a moment of passion, asked her to use my vibrator on me. She jumped out of my bed, called me a queer and ran off.

Sheldon looked up quickly when he heard Penny's sob. He was shocked by the tears on her cheeks. She rushed over and threw her arms around his waist. Sheldon tried not to jump away as he heard her muffled sobs. "Penny?"

"I'm so sorry!" she cried. "Oh, Sheldon! I'm so sorry you had such bad experiences!"

Sheldon relaxed and loosely wrapped his arms around her. She really was the most tenderhearted friend. He was lucky to have her. "Penny, please do not worry. It is what it is."

They stayed in their embrace for several long minutes. Sheldon found it peaceful and was sorry to feel her pull away.

"Sheldon," Penny bit her lower lip a bit. "You once said you thought I was beautiful. Do you still think so?"

Sheldon frowned, wondering why she had to ask. "Your beauty is a fact, Penny. Why?"

Penny placed a hand on his chest. "Sheldon, I would like to try something. I would like to try to please you, sexually, the way you like."

Sheldon's lungs seized up. He struggled to catch his breath. He stared at Penny for several seconds. "Why?" he finally managed to ask.

Penny blushed this time. "Two reasons. Well, three actually. One, you are my friend. My best friend. I want you to be happy. Two, I've always thought you were attractive, and I'm jumping at the opportunity to see if you are as sexy undressed as I think you would be. Three," Penny took a deep breath. "I want to see you lose control. With me, in a safe environment. I want to see you cum. I want you to have a good experience with sex, and I want to be the one to give it to you."

Sheldon was torn between desire and fear. Penny laid her palm along his jaw. "Sheldon, I promise you this. I will do whatever you ask. I will ONLY do whatever you ask. I won't try to force you into anything you don't want. Whatever preparations, whatever you need to feel comfortable, I'll do."

Sheldon couldn't believe his ears. "You ..would do this for me?"

Penny smiled softly, invitingly. "Yes, Sheldon. For you."

He stood up and felt something warm and pleasant pool in his abdomen. Penny had promised him. She kept her promises. Always. "Alright," he said softly. He felt anticipation well up inside him.

Xxx

Penny had never had someone just watch her shower before. It was pretty exciting. She followed every request Sheldon made. She washed and shaved for his comfort. She even douched so he could be assured of her cleanliness.

Sheldon had taken his shower across the hall. He had brought his own vibe and lubricant along with spare pajamas and his robe. Once she was bathed to his specifications, she dried off and slipped on her robe. They went back into her bedroom, where Penny had already changed the linens. They sat down on the bed and Penny turned toward him.

"Sheldon, tonight is all about you. Whatever you want, I want to give you."

Sheldon looked at her with such hope and wariness, she felt her heart breaking for him. He had been disappointed every single time he had attempted to be intimate with someone. He was afraid this time would only be another mark on that list.

Slowly he leaned over and kissed her softly. Penny let him take the lead, exploring her lips and mouth. Sheldon reached over and laid his hand on her thigh. After a moment he moved his hand to her hip and he squeezed gently. His hand slid up over her ribs to rest under her breast.

Penny let him lay her back, and lean over her body. His lips moved to her neck and his hand caressed her breast. He kissed down her chest and hesitated over her breast. Penny looked up at him tenderly.

"Whatever you want," she reminded him.

Sheldon spread her robe and looked over her body carefully. He leaned down and timidly licked one nipple. It contracted immediately and he grinned. He took it into his mouth and suckled gently. A low moan escaped her throat and he trailed his fingers down her stomach. He groaned when he felt how wet she was. Pride rose up in him. He did this. He had turned her on!

"Penny," his accent was thick. "Touch me?"

She moved her arm between them and into his robe. She wrapped her hand around him and slowly stroked his erection. Sheldon rested his head on her breast and moaned as pleasure began building. He slipped two fingers inside her and began to move them in and out.

Penny's inner walls clutched at his digits and he looked up to find her staring at him warmly. He was beginning to think he had never really known her, understood her, before. They watched each other as they used their hands to pleasure each other. Penny gasped as his thumb began to stroke her clit. Each stroke was firmer than the last.

Sheldon sped up his fingers and bent to kiss her firmly. In seconds Penny's back was arching as her orgasm burst over her. Sheldon removed his fingers and reached for the wipes Penny had set out for them.

Once Penny had caught her breath she rose up and pushed Sheldon onto his back. She grabbed the lube he had brought and squeezed some onto her hands. She didn't want to chafe him when she began to really stroke him.

"Sheldon," she said as calmly as possible, "before we go any further there is something I need to know. Where do you want to cum?"

Sheldon looked at her with a bit of confusion and worry. Penny smiled reassuringly.

"You have a few options, sweetie. I can grab a towel, or there's my hand, my chest, or my mouth."

Sheldon looked at her in surprise. "You would let me …on your …your mouth…"

Penny nodded with certainty. "I absolutely would let you, Sheldon. Wherever you want. I want you to have everything you want."

Sheldon raised up and kissed her hard. "Your mo..mouth," he whispered. "Please?"

Penny smiled and wrapped her slick hand around his cock firmly. She stroked him firmly, making his eyes go wide, as she used her other hand to spread lube around the tightly bunched skin of his anus. She rubbed gently, feeling the muscles slowly relax. Once she was sure he was as relaxed as possible, and focused on her other hand stroking his shaft, she eased a finger inside him.

Sheldon gasped and trembled. "Am I hurting you?" she asked cautiously. He shook his head wildly and his hips bucked against her. She flexed her finger and gently pumped into him. She was amazed at how his cock got harder because of her invasion. He was so thick she could barely span his width.

Sheldon moaned and gripped her sheets in his fists. Penny dipped her head and slipped him between her lips. Sheldon's eyes were like blue flames as he watched her go down on him. She pushed a second finger inside him and he growled. Penny thought it was the sexiest sound she had ever heard.

Penny moved a at steady pace, not wanting to end this too quickly. She wanted Sheldon to be utterly satisfied when they were done. Once she was able to move her fingers easily, she removed them and reached for the vibe. Sheldon took it from her and spread lube over it.

"Low," he whispered between gaping moans.

Penny set it to low and eased it inside him slowly. Sheldon guided her, helping her hit just the right spot. Once she found the spot, she was able to set a rhythm. She pushed the vibe in as her head went up. She worked his body between both sensations, leaving him writhing and gasping on the bed.

Sheldon whispered her name like a mantra, over and over. She felt his body tense and she relaxed her throat as much as possible. Sheldon's hands rose and twisted in her hair tightly. A second later, she tasted him as he splashed over her tongue. She swallowed quickly, trying to keep from losing a drop.

Once he began to soften, she removed the vibe and reached for the wipes. She cleaned him completely and walked into the bathroom. She brushed her teeth and rinsed with mouthwash.

She walked back into the bedroom to find Sheldon sitting up, a worried look in his eyes. "I apologize," he said softly.

Penny sat down beside him. "For what?"

Sheldon looked down at the floor. "I made you gag. I felt your reflex. I am sorry."

Penny grabbed his chin and made him look at her. "The amount, sweetie. Not the taste. You filled my mouth pretty fast, and I had a hard time keeping up."

Sheldon looked at her uncertainly. "Then why did you rush to the bathroom?"

Penny grinned. "Because I don't think you would let me kiss you without brushing my teeth first."

Sheldon smiled softly. "You weren't upset or turned off?"

Penny stretched out on the bed and pulled him down beside her. "Sheldon, that was quite possibly the best thing I have ever experienced and we didn't even have actual coitus."

Sheldon grinned smugly. "I found it highly enjoyable myself."

Penny ran her fingers up and down his arm. "Would you be willing to do this again, then?"

Sheldon looked at her hopefully. "Penny, are you sure? I don't want you to feel like you have to."

A knock on the door interrupted them. "Penny?" Leonard called.

Sheldon looked panicked so Penny rubbed his arm comfortingly. "I'll get rid of him. He'll never know you are here."

Sheldon kissed her quick as she sat up. "Penny, I am not ashamed to be here with you."

Penny pulled on her robe and moved to the door. "Hey," she said to Howard, Raj and Leonard. "What's up?"

"Have you seen Sheldon?" Leonard asked. "We were at a club and when we got back, he wasn't home."

Penny nodded. "Yep. He's here. He's not dressed though, so could it wait?"

The guys snickered. "Seriously," Howard said. "Have you seen him?"

Sheldon suddenly appeared behind Penny. It was obvious that he wasn't wearing anything under his robe. His skin was still flushed and his hair was in disarray. "Did you need something, or are you just curious as to my whereabouts?"

The guys gawked at the two of them speechlessly. After a moment Penny closed the door and locked it.

Sheldon looked down at Penny. "May I stay?"

Penny smiled and nodded before leaning up to kiss him. They walked back to the bedroom and slipped off their robes. They laid down and got comfortable.

"Sheldon, thank you for trusting me," Penny said tenderly.

He leaned over and kissed her again. "Thank you for caring about me."

Slowly they began to drift off. "Penny?" he mumbled sleepily.

"Hmmm?" she replied.

Sheldon yawned and drew her against his chest. "Can we try the actual coitus when we wake up?"

Penny kissed his chest and nodded. "I'd really like that, sweetie."

Before he fell fast asleep Sheldon looked at the green bear on the dresser. Who knew stealing Good Luck Bear would be so lucky?