Sadly, I don't own The Big Bang Theory

This is a gift for Jislane who PM'd me to write this story based on an idea she had. I hope she enjoys it.

Howard and Raj stared at her as she ate her beef-a-roni. "She's completely transformed into Sheldon."

Raj nodded as Leonard waved them off. "It's just acting, and she's pretty good at it too. She even freaked out Barry when he came into her office."

"It's because of the three of you, Bernadette and Amy that I must act like this for an entire day." She added, picking up a napkin and wiping her mouth with it.

The guys stared as she picked up two more, one for each hand before she stood up with her tray. "Now if you excuse me, I must get back to work. Good day."

Penny walked out of the cafeteria as Raj spoke up. "Did you see that? She even has a napkin system. This is beyond acting, I think prolonged exposure to Sheldon's office is making her transform into him."

"Yeah, did anyone tell her about his napkin crap?" Howard asked, earning a shake from each one.

"Is Cooper's clone finawy gone?" Barry asked, occupying the chair where Penny was sitting moments ago. "If I didn't know bettew I would say Cooper got a sex change."

"Look, even Barry sees that something's wrong!" Raj exclaimed, pointing his fork across the table. "And yes, Penny said she had work to do, probably giving herself a manicure. I doubt she's doing anything physics related."

"That giwl scawed the cwap out of me. She's even weawing batman underwear." Barry told them as Howard and Raj choked on their cobbler.

Leonard looked over his glasses. "How do you know that?"

"Her wegs were pewched onto the desk, it wasn't that hawd to see pawt of the logo on hew butt."

"Lucky bastard." Howard muttered, taking a bite of his cobbler.

Sheldon groaned, his feet ached from walking and standing around all day. He missed the comfort of his office and at least it was free from pathogens that he could easily catch in this establishment. Not only was he thrown cake at but an elderly man sneezed on his hand as he picked up his empty plate. He regretted not sneaking a bottle of hand sanitizer into his pocket. Then he wouldn't have to run to the bathroom every thirty minutes to wash his hands as the manager yelled at him for being too clean. How can one not consider hygiene a top priority at a restaurant?

Sheldon watched as his friends walked into the restaurant, sitting at their usual table. If they were here then it meant that work was finally coming to an end. He walked over to them and smiled as they stared at him.

"Hey guys, what's up?" Sheldon forced out as Howard bit his lip to keep from laughing.

"So how was work for you today?" Bernadette asked, handing him her menu. "Not as easy as you thought it would be?"

"Right, my feet ache and I had a horrible day." He answered and looked at Penny. "It's a miracle you've managed to work here for like, five years."

She stifled a laugh; he was good at imitating her. "Your grammar is horrendous but you are correct nonetheless."

Sheldon glared at her as he took everyone's orders and stomped away from their table.

"Here's your barbeque bacon cheese burger with barbecue, bacon and cheese on the side." He announced, plating it in front of Penny as she nodded.

"Thank you. Wait, did you touch it?"

Sheldon stared at her. "Nope."

"Did anyone else touch it or sneeze on it?" She asked as everyone at the table's eyes shifted between them. He forced a smile.

"Penny, I was careful."

She started assembling her burger and waved him off. "That will be all."

Amy continued to stare at Penny and leaned over to the left toward Leonard. "I think our idea has gone too far. At this rate we'll have two Sheldons in our group."

Penny grinned, she was enjoying this day so far. She now understood why Sheldon was the way he was, it was thrilling to be dominant in both looks and intelligence. If only he could apply his Alpha male façade to more practical situations.

An image of Sheldon tangling his fingers in her hair as he covered her lips with his flashed through her mind. A honk interrupted her vision and she turned to look at Sheldon driving under the speed limit again.

"Sheldon, the designated speed limit is 30 miles per hour."

He scowled and stared at the clock, only two more hours of this dare and he would be free. "I don't care, 20 miles is fast enough for me."

Penny turned to look out the passenger window as they came to a stop at a red light. Sheldon looked over at her and pursed his lips; it was a marvel that he was missing the old Penny he knew for five years. He recalled her laugh and beaming smile as she waltzed into their apartment day after day. It was a complete transformation from this morning when her voice mimicked his tone of superiority.

The conversation played through his head and he remembered the batman undergarments that she mentioned early today. Penny turned to look at him and their eyes met.

"Sheldon, the light switched to green. Keep your eyes on the road."

"What took you so long?" Leonard asked as Sheldon and Penny walked into the apartment.

"Since I'm Sheldon for the day, he was responsible for driving us home."

He glared at her. "You forced me. And you know why I don't drive."

Penny grinned. "You are not a Homo Novus today but an average Homo Sapien, just like the rest of humanity."

Leonard watched them; it truly was frightening to see how they reversed their roles. Sheldon sighed and sat down in his spot, earning a look from Penny.

"That's my spot."

"Oh come on." He moaned, holding his head in his hands.

"You know the rules, move over." She ordered, snapping her fingers.

Sheldon mumbled under his breath and complied, shifting over to the middle cushion as Leonard observed them. What if Amy was right and Penny couldn't shift back to her old self? He shook his head from the thought of her turning into a robot.

Thank you for reading and please review!