The first two times I fucked my sister I was cautious, slow in my approach but as soon as the motel door closed I dropped to my knees then put my head under her skirt and inhaled the fragrance of perfume mixed with the sensual musk of her body. My cock which had been firming up, swelled to capacity as I put my lips at the top of the slit under the panties. I kissed Shelby there then licked her pussy through the cloth. She fell back to the bed, her knees bent over the edge, my mouth still on her. She moved a hand between me and her then with two fingers pulled her panties to the side, exposing her pussy for my attention. I kissed, licked and probed her cunt with my lips and tongue until she began to vibrate. Shelby grabbed a pillow and smothered herself as she orgasmed, her thighs were shaking, vibrating against my cheeks and ears when she came.

I leaned back from my prone sister, she moved the pillow from her head and looked at me with soft, warm eyes, “Wow” was all she said. She pushed up to her elbows and looked at the tent in my pants. Shelby got off the bed, kissed me lightly then we undressed completely.

The first time I had sex with her we were subdued, coupling without passion, it was enjoyable but sedate. The second night with her was more animated, we were not being shy but still reserved in what we did, how we screwed. But this time was different, Shelby bounced onto the bed, dragged me by an arm to join her then got up and over me so she was sitting on my chest with my arms pinned to the mattress. She squirmed her butt, moving up my chest until her crotch was pressed on my chin. I could feel the warmth of her cunt as she radiated lust. “If you want to put your dick in me again you’ll have to wrestle me down.”

The challenge was answered in a heartbeat. I arched my back which flipped my sister off, she fell next to me and I rolled to face her. We started wrestling, tickling, teasing, laughing, fondling, necking and touching as I not too gently assaulted her. After a few minutes of heating her up I moved around until my mouth was over the junction of her legs then kissed her crotch. Shelby’s left leg shivered and her stomach contracted at the first touch of my mouth then I got serious about turning her on with my lips and tongue again. I couldn’t tire of eating my sister.

The scent and taste of her assailed my senses and turned my prick to hot steel, my nuts were high and tight while I humped the mattress between her legs. I focused all my lust on licking and kissing her cunt. She was flowing, I lapped the erotic tasting fluids from the crack between her thighs. It was when I rubbed the end of my thumb on her anus that Shelby pulled up her legs then began to vibrate with the shocks of her second orgasm. Her clit swelled and extended from it’s soft skin hood so I captured it between my lips and sucked on it which caused her to crest over a series of orgasmic peaks. When she was done shaking and gasping I rolled away from her, her tits were bobbing as her chest heaved for cool air. She rolled her head to me “My god, Tony, I never felt any thing like that, ever. What is it about you that makes me so damn hot?”

“I don’t know, maybe because we aren’t supposed to be doing something like this? Fucking your brother is supposed to be illegal, evil, vile and totally perverse.”

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