Note : This story is completely fictional!

It was rather disappointing to know the week was nearing its end. Mom and Dad would be back from their cruise soon, which would force my sister and I to hide out activities again. But the week had been great. Eileen and I had taken full advantage, living our Mistress/Slave life openly around the house. Furthermore, I hadn"t worn a single piece of male clothing since my parents left the house.

On the final day of the week, I had been allowed to pick out my own outfit to wear. I dressed in a simple outfit, though I knew it would arouse me anyway. For underwear, I began with white cotton panties, tan pantyhose, and finished with a white, full-body slip. I then matched a navy blue skirt with a light blue, satin blouse, that I tucked into my skirt. I chose not to wear shoes, because I expected them to be off soon enough.

When I came to my sister in the living room, I found her sitting peacefully on the couch, reading her favorite book. Before speaking, I took a moment to look at her. She was dressed somewhere between formal and casual. Her black skirt, one that I knew had a small zipper in back, stopped just above her knees. It matched her sleeveless turtleneck sweater, thin enough to be worn in summer. I couldn"t tell if it was stockings or pantyhose that covered her legs, but they were black and very opaque. Finally on her feet, was a pair of open-toe, three inch high heels, with triple ankle straps.

"Mistress Eileen?" I said nervously. Eileen read a few moments longer, then lowered her book (but not closing it) and looked up at me. "May I have a moment?" Eileen bookmarked her page and set her book aside. I thought about sitting but didn"t, as I had not been given permission. "I, uh..."

"Out with it," Eileen encouraged. She didn"t sound annoyed yet, but soon would if I kept stuttering.

"I want you, Mistress Eileen."

Eileen simply smiled at me for a brief moment, then stood and approached, her heels clicking on the hardwood flor. Without a word, she kissed my passionately on the mouth, wrapping her arms around my waist and holding me close. I squeezed her butt hard while pressing my erection against her; in reply, she spread her legs as far as her tight skirt would allow.

Leaning back a little, Eileen unbuttoned my blouse and let it fall to the floor. My sister then lifted her arms, allowing me to strip her of her sweater, which revealed her bare breasts. I bent down and took her nipples between my lips, one at a time.

"Oh, yea," Eileen moaned. "Suck those tits!"

The next thing I knew, Eileen was throwing me onto the couch, face up. Lying there, I watched her unzip her skirt and let it drop. She wore no slip or panties--just a four-hook garter belt to hold up her stockings.

My sister didn"t bother with removing my skirt or body slip, but rather lifted them. Aggrivated at finding another barrier, she yanked my pantyhose and panties down hard, ripping both of them in the process. Fortunately, I was already hard enough to go in her, because she quickly climbed over me and dropped down.

I could believe what I was feeling. This was it. My dick was finally inside my sister"s pussy, and she was riding me like a wild horse! This felt better than anything I had ever experienced before. Thinking with the wrong head, I pushed upward into Eileen. She stopped me, an angry look appearing in her eyes.

"Did I say you could do that?" Eileen demanded of me.

"I"m sorry, Mistress Eileen," I quickly apologized.

"So, my bitch wants to do the fucking, huh?" With that, Eileen stood, pulling my up with her. When she crawled back onto the couch, she was on her hands and knees, with her legs spread apart. "Fuck me, you dirty bitch!"

I obeyed without hesitation. Returning to her, I re-inserted myself into my sister, fucking her doggie style. Normally, I have better stamina than this, but pumping into my sister was more pleasure than I could handle. Giving one last thrust, I orgasmed, shooting my load into my sister"s pussy.

"Oh, god!" Eileen screamed. "That"s right--cum into me! Do you like cumming in your sister"s pussy?"

"Yes, Mistress!" I managed to say between cum shots. I knew, of course, why she worded that question so. Hearing her remind me verbally of just what was happening, aroused me further and prolonged my orgasm.

"Say it!"

"I love cumming in my sister"s pussy!"

Finally, it was over. When my sister had the energy to move, she turned to me and said, "From now on, you"re going to cum in me every... single... night."

*FOOTNOTE*
Fans, I hope you enjoyed this latest installment of the series. Keep your eyes peeled for the next one, and don"t forget about my fan-mail e-mail address: incest_demon at hotmail dot com

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