The Double Pleasure Experiment

A Big Bang Theory Fan Fiction

Author's Note: This fic is definitely M RATED. I think I will only post Chapter One here. The other three chapters (along with this one) will be posted on either A03 or Adult Fan Fiction. I have not decided yet. DO NOT read this story if you are offended by anal sex. The Shenny is in a committed relationship and Penny wants Sheldon to experiment with her. They have plenty of dialogue, but the plot is more PWP. You have been warned, repeatedly. So please don't complain and say how you were shocked by the crude and explicit content. A big thank you to SlightlyOffKey, TJayM (Beta for Chs. 1 & 2) & MyOwnStar for their feedback and comments. Now on to the story.

Chapter One: The Discussion

Penny was now reaping the benefits of a sexual relationship with Dr. Sheldon Cooper, former self-proclaimed Homo Novus. For all of his protests, Sheldon enjoyed sex with Penny and it didn't take much to get hot and bothered. She took great pride in making his control snap. They had sex everywhere: on his bed, her bed, the shower, the kitchen counter and even on his beloved spot on the couch. He would go and overzealously clean each surface after, but the results were so worth it. Her orgasms with him were better than with any of her previous partners. His tongue and fingers would wreck havoc with her body before a delicious pounding by his enormous dick. It was so thick and long that Sheldon would spend at least 20-30 minutes in foreplay to help her pussy prepare for the luscious invasion. She almost always came within a few minutes of penetration. Then, he would thrust his way towards a second orgasm for her already sensitive nerve endings. Her attentive partner regularly found new areas to titilate on her body and sex with Sheldon was always amazing.

However, there was one thing they hadn't tried yet. Penny secretly wanted to engage in anal sex and double penetration. She wasn't interested in having a second guy join them in the bedroom, but the fantasy of having Sheldon fucking her ass as another dick was pounding away at her pussy was too delicious to ignore. They had been together sexually for six months already. Penny felt it was time to share this particular fantasy with him. If Sheldon ever discovered a time space portal, maybe they could visit a Sheldon from another reality and she could have both of them at the same time.

After a homemade dinner of spaghetti and hotdogs, Penny felt it was time to bring up the subject of anal sex.

"Sweetie, there is something I wanted to discuss with you."

Looking up from the television Sheldon replied, "Yes, Penny?"

"Our sex life is amazing, but there is something I wanted to try out with you."

"Do you want me to start using latex gloves when I finger you? That is much more sanitary."

"No Sheldon. It's definitely not that. I want to experiment with anal sex and dual penetration."

"What are you talking about woman?"

"Sheldon, relax. I want you to fuck my ass while shoving a dildo into my pussy. Imagine how tight I would be. Your penis would be in heaven."

"Your argument sounds compelling, but the anus is highly unsanitary. Steps would have to be followed for the most hygienic experience possible. Douching and condoms with proper lubricant would be required."

"That's fine Sheldon. It would hurt me if you just shoved your dick in my ass without getting me ready."

"How about on your next weekend off we prepare you and engage in anal coitus?"

What a pleasant surprise. Penny thought it would take much more pleading to convince Sheldon to help her make a deeply hidden fantasy come true. She was getting very turned on just thinking about it.

"Really? Thank you! I promise it'll be fun. If you don't like it, we never have to do it again. How about we go to my room and do it the old fashioned way right now?"

"All right Penny. May I be Sheldor and conquer Queen Penelope with my mighty mace?"

Role-playing was one of Sheldon's kinky fetishes. He hand-made several costumes for her. The collection included Queen Penelope, Royal Princess Leia, Slave Princess Leia, Seven of Nine and other Star Trek outfits for both female starfleet and female aliens. Actually, she was on her third Seven of Nine costume. During two encounters, Sheldon ripped off sections of skin tight latex in a heated frenzy. Her favorite though was a sexy variation of the Hogwarts School uniform. It had an attached mini cape. Sometimes she would wear no underwear beneath the little plaid skirt and Penny would call him Dr. Cooper as he spanked her ass to a rosy hue. Several times they engaged in this sexual fantasy in his office at CalTech. They would go on weekends and Sheldon would fuck her over Raj's gigantic desk in a variety of positions. Needless to say, he would disinfect it and put everything back in place before Monday morning. After the fiasco with the retired professor's desk, Sheldon had moved back to his old office and would stare at the monstrosity of Raj's desk with disdain.

Giggling loudly, Penny said, "You may."

She led him to the bedroom and proceeded to blow his mind and his mace.

TBC