Hey, so, this idea has been rattling round my head for a while. I thought I'd write a first chapter, and if enough people like it, I'll carry on. It's late, so bear with me. Unbeta'd.

Disclaimer: I owit nothing, sosososos sadly ;P

"Oh I'm sorry, does your body mass somehow link in with your self-worth?"

Sheldon's words rang through Penny's mind as she thrust her fingers once more down her raw throat. She gagged slightly as the last of her stomach contents came up, along with a wave of acid. Tremors were skittering up and down her hands as she collapsed down next to her toilet, tears streaming down her face. After she caught her breath, she jumped up, staggering as a wave of dizziness faded her vision, and ran into her kitchen. Before she could change her mind, she seized a plastic bag, and grabbed every item of junk food she could find, shoving it into the bag. When she was finished, she threw open her apartment door, and jogged down the stairs, holding the garbage bag at arms length like it was going to bite her.

"Penny?"

Penny ignored the call, rushing past the person who said her name. Her door was wide open.

Penny ran into the street and threw the bag into the nearest bin she could find. The night was warm, and rustled against her bare legs as she made her way back to her apartment building. She went through the door and climbed the stairs, wincing as the breath caught in her sore throat. When she reached the fourth floor, she found Sheldon stood next to her door, an inquisitive expression on his face.

"From your failure to acknowledge my presence in the latter moments, I am forced to assume that the bag you rushed past me with contained something highly dangerous and possibly harmful."

Penny smiled at the irony of Sheldon's statement.

"Well look at you, Mr. Perceptive!" Penny drawled. Sheldon frowned.

"Sarcasm?"

Penny laughed.

"Yes sweetie."

Sheldon sighed.

"Penny, I do wish you'd refrain from utilising facetious language around me. I understand that exposure on a near constant basis is the way for me to learn and imitate social conventions, but I am having difficulty deducing when your language is mocking or not, and to be frank, I am not entirely certain that sarcasm is an accepted social normality."

He paused, sighing at her blank expression.

"Um sweetie.. I have no idea what you just said, so I'm just going to go ahead and.. You know, head back into my apartment.."

Penny retreated away from Sheldon with a smile, but once her back was turned, her eyebrows knitted downwards into a worried expression. Shutting her door, she thought about the events of the last 20 seconds. When Sheldon had been speaking Sheldonese, she'd been forced to tune out, but found she couldn't pull her eyes away from his. The intense blue ones had seemed to look right through her fake exterior smile and into her soul, which harboured her deepest, darkest secrets. She'd been terrified of speaking, in case he smelt the vomit on her breath, and had been forced to retreat into her apartment.

Inhaling deeply, Penny headed over the the treadmill she'd recently purchased and constructed in her living room.

Twenty minutes later, drenched in sweat and gasping for breath, Penny kept running, the words Sheldon had spoken to her so long echoing around her mind.

"Oh I'm sorry, does your body mass somehow link into your self worth?"