Many thanks to TRC for betaing.

Previously...

"Shut up Howard."

"I'm just saying, look at her track record. I don't want you to get hurt. She's major league, you're still playing tee ball."

"What's that American baseball reference supposed to mean?"

"It means: She has many innings under her belt and this is, to my knowledge your first time up to bat. Again, I don't want you to get hurt."

"But she's Penny," Sheldon murmured.

"Exactly."

Sheldon and Penny walked to their room. It had been a long wait at the hospital. Penny was dead tired, but perked up remembering what was in the bag that Sheldon had clutched to his chest.

"So, you tired?" she asked when they walked in the room. He opened his mouth to answer, but she beat him to the use of his mouth. She reached up with both hands to pull his head down. After the initial shock, she was pleased when Sheldon responded. He reached around, bag still in hand, to pull her in close. He had been deep in thought during the ride home, thinking too much about what Howard had said.

He forgot all of that now. All he could think about was her lips on his and her tongue in his mouth, dancing with his own tongue. She unzipped his coat and un-wrapped his scarf, letting both drop to the floor. She heard him whimper in protest, but she silenced him again. She let her own coat and scarf fall while she led him to the bed.

"Penny?"

"Ya sweetie?" she cooed as she slid her shoes off.

"I'm not sure what to do."

"Just do what feels natural, whatever feels right to you." She kissed him again, hard. She jerked her head back, thinking she should lay down some ground rules. "But before you start sticking anything anywhere you better make sure you've got my permission first," she said with her finger pointed at him. He nodded and dropped his head to meet her lips again. Slowly they lost their clothes, kissing the newly exposed flesh along the way.

She traced the line of hair on his stomach, kissing where she traced. She smiled when she heard his breath catch as she crept closer to the straining bulge in his pants. She looked up the length of his chest, waiting for the green light from him. "May I take these off?" she purred. She smiled again when he nodded.

Sheldon helped Penny take his pants and briefs off. He did a check of himself: heart racing, increased respiration to the point of hyperventilation, testosterone levels increased, adrenal gland in full production. He watched Penny as she wrapped her hand around the shaft of his penis. He sucked in air as she slowly pumped up and down. He felt himself get light-headed when he watched her lip the pre-ejaculation from the tip of his penis.

She moaned when she licked the tip of his cock, she loved the look on his face.

Priceless.

Penny looked up at Sheldon as she turned her lick to a kiss, to a suck that took him into her mouth. She listened to his breathing, it started to quicken and she felt his toes curl. She eased up, not wanting this to end just yet.

She moaned again, mumbling a remark about how he was too big and thick for her to suck him off as she shimmied up to meet his lips again.

Sheldon almost lost it when she said that. He took a deep breath and thought about work, then about calculations, and then, oddly, he thought about Leonard.

"Am I to understand that my size is adequate?" Penny smiled. "Sheldon, you'll have to take it easy with me. Just until I adjust to you," she said as she kissed him again.

"I figured that comparing my body size to Leonard's, statistically and proportionally, I would be larger than him." What he didn't say and couldn't understand was that he was over the moon happy about that news. He knew that primitive social imperatives stated that the larger sexual organ of one male compared to another's was a factor in noting the alpha male. He smiled to himself. He took Penny's non-verbal cue to kiss her down her neck. He let himself go lower and lower, reaching the swells held in the polka-dotted bra. He pushed the straps of the bra over her shoulders and reached behind her. He popped the hooks from the eyes in a fraction of a second. Penny gasped.

"What do you do, practice in your room?" she teased.

"Just do have at least an elementary understanding of simple hook and eye methodology." Penny ignored the comment. She shivered when she felt his mouth move lower. He kissed and took a nipple into his mouth. She involuntarily moaned. She shifted herself so she could wrap her legs around his body. Sheldon smirked when she rocked her hips into him. He moved to the other breast and she let her head drop back. She had both hands in his hair, holding him-Encouraging and praising him.

Sheldon scooted up and rotated his hips, knowing that he would get another moan from Penny. He was starting to understand his colleague's obsession with coitus. This was more addictive than drugs, he concluded. Penny was starting to lose her control, she wanted to lose her panties, which she knew were dripping wet, and slide him in. She craved the feeling, she ached for it.

"Sheldon. Condom," she gasped. She crawled off of him and stumbled to the door. She only had a mini orgasm, but she would compare it to one of the best she had received from Leonard. Her legs were Jell-o, and all Sheldon had done was play with her breasts while she dry humped his chest.

She knew which sizes wouldn't fit him, so she picked the best bet. Worst case scenario, they would return the unopened boxes for refund.

She found the right box and turned back to the bed. She handed over the box. "Here ya go."

Sheldon carefully opened the box and unfolded it. He was pleased when he saw that the pictured instructions. He read over the instructions and separated a foil. Penny watched and squirmed in place. She was dying watching him read.

"Come on Sheldon. Get it on!"

"I'm reading the correct and proper usage. Look at the statistics here," he said as he showed her the box. "Look at the failure rate with incorrect usage." She grabbed everything but the one condom he had in his hand and dropped it on the floor. Sheldon opened the foil and slid out the condom. He positioned the device on the tip of his erection. Penny groaned as she reached to the floor. She knew he would see his error and demand a new condom.

"Drat! Penny I require a new condom. I seemed to have attempted to place the latex contraceptive on the wrong way." She nodded and handed over a new one.

"How about I put it on," Penny offered. She dropped to her knees right in front of him. He watched with hooded eyes as she carefully opened the condom's package and slid it on.

Sheldon thought that it was a good thing that she had some experience with this, if not he would have gone through the whole package. This thought got him wondering who the condom putter-on'er was between her and Leonard, this thought migrated to Howard's talk at the hospital.

Penny smiled at him and wrapped her arms around him, pulling him down on the bed. He kissed her, teased her with his touch, but he couldn't get the conversation out of his mind. Penny froze, pulled her head back and looked at him.

"What did you say?" she asked. Sheldon looked at her in confusion.

"Pardon?"

"You said Leonard's name. Why?"

"I was thinking about him," he answered. Penny shook her head.

"Sweetie, when we're doing this, you don't think about other people. You don't talk about other people. OK? Just be here."

"But I am here."

"Have your mind here." She resumed kissing him on his neck. She sucked on his ear lobe and grinned when she felt him jerk on her leg. She was back in the game and ready. Sheldon could only think about the droves of previous sexual partners that had done this before him. Touched Penny in the same way and had been kissed the same way. He pulled his head back to look at her. She sighed.

"What Sheldon?"

"I can't help but ponder that there has been great experience on your part in this matter. I know that there have been several previous sexual partners just in the short time frame that you have moved to your apartment. I find it difficult to not think about those experiences that you have had during my current experience. I find myself, one might say, haunted by their prior involvement."

Penny stared at him. What the hell did that mean? Sheldon noted her confused look.

"To put it more simply, dear Penny. Let's say I am the new acquirer of a used car, I not only have to ponder what the prior owner of the vehicle did, but the manifold owners before that owner. That is not even including the multiple driving skill set of said prior owners. It's a very difficult mental situation to be burdened with." Penny felt her eyes sting. He just compared her to a used car. A defective damaged, no longer wanted used car. She swallowed hard.

"So, let's say that this car had too many miles on it, would you reconsider taking the car? Or too many prior owners?"

Sheldon cocked his head to the side. "Well of course, it's just poor practice and judgment to accept a car in said condition."

"So what would be too many miles? No don't answer that. I-I-" Penny untangled herself from Sheldon and scooted off the bed. She felt dirty and damaged. How could she be so stupid? She was the car in question. She reached for her shirt and pulled it on. She rushed over to her suitcase and grabbed her shorts.

"Penny?" Sheldon asked, confused.

"Forget it Sheldon." She reached for the spare pillow and blanket. "I'm sleeping in the tub. I'll be out before your scheduled time slot for the bathroom tomorrow morning."

Sheldon watched Penny disappear into the bathroom. He held his breath, knowing something really bad had just happened. His fear was confirmed in his gut when he heard the lock thumped into place.

Sheldon was frozen in place. He felt a pain in his chest and a undesirable feeling in his stomach. After what felt like hours, he sat up. He looked to his groin, no longer was it ready for coitus. He rolled the condom off, slid it in the foil wrapper and placed it in the trash. He dressed, picked up their discarded clothes, and hung their coats. Each movement made his chin tease and his eyes sting. He played back what had happened in his mind a hundred times already, but he couldn't see what he had done wrong yet. Now he had to pee.

"Drat," he cursed. He placed his ear to the door, he heard nothing. He knew it would be a poor decision to knock on the door and tell her he needed to urinate. He put his shoes on and grabbed his room key.

He left the room, being very quiet with the door. He walked to a door that he was sure would let him use their bathroom.

Knock, knock, knock.

"Raj and Leonard."

Knock, knock, knock.

"Raj and Leonard."

Knock, knock, knock.

"Raj and Leonard."

Raj opened the door. "Hey dude, what can I do you for?"

"I need to use your bathroom," he said. Raj looked at him with confusion.

"What's wrong with yours?"

"Penny's using it."

"Then wait for her to be done."

"Not that simple. Now I really have to go. May I use your bathroom?" Sheldon asked with teeth clenched. Raj opened the door more, allowing him in. Sheldon bee lined it to the bathroom.

"What's that about dude?" Raj asked Leonard. Leonard sat up and scooted against the head board.

"I honestly have no clue." He looked toward the bathroom when he heard the flush, followed by the sound of the sink. Sheldon re-emerged looking confused and rejected.

"What's up?" Leonard asked.

"Oh, you want to catch up with the events of the day. Very well. Well after a horrid experience down stairs, Penny and I ate breakfast at the diner down the street. Got supplies from the drug store. Took Howard to the hospital. Practically carried him to his room. Had an erotic experience with Penny, which ended with her leaving prior to completion of coitus, to take a blanket and pillow into the bathroom."

"What did you do?" Leonard and Raj asked in unison.

"I don't know."