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A Back Rub For Julia Ch. 08

Date: 11/11/2017, Categories: Fiction, Incest, Teen Male/Teen Females, Author: Famekiller, Rating: 93.1, Source: sexstories.com

it left a pale pink slash across her otherwise unblemished white skin. At the moment of impact, Katie let out a satisfied growl from the back of her throat, and I knew that I was on the right track towards giving her what she wanted. I gripped my cock at the base again, and delivered another heavy blow to her buttocks. She grunted in pleasure again. I had already spanked Julia's ass today, and I try not to be a one trick pony. "Spread your legs, K." She turned to face me slightly, but without making eye contact, and moved her feet a few inches. This was not at all what I meant for her to do, and she knew it; she was trying to be obstinate. She wanted to be punished. I leaned over my sister, and grabbed a handful of her curly red mane, and pulled back on it hard, causing her to involuntarily arch her back. I then put my foot against her tiny heel, and pushed, spreading her legs generously. "When I tell you to do something, Katie," I growled into her ear, "I expect you to fucking do it. Now you have to be punished." This simple statement elicited a groan of longing that was much stronger than her other satisfied sounds. I was definitely on the right track. "Do you know what happens to bad girls, Katie?" She shook her head. This was definitely a test, and I would not let this stand as it was. I reached my free hand around, grabbed her roughly by the throat, and wrenched her into an even more unnatural position. This had to hurt, but the noise that escaped her lips wasn't a ... sound of someone in pain, but of someone in ecstasy. "I asked you if you fucking know what happens to bad girls, Katie?" "They... They get punished?" she asked hesitantly. I smiled inwardly at the look of exultation on her face. I let go of her throat, allowing her to relax out of the ridiculous position that I had bent her into. "That's right, little sister. They get punished." I caressed the silky smooth skin on the back of her taunt thigh. She was positively drenched in her own juices. Her lubrication had not only ran down her thighs, but had liberally coated the side of the seat between them. "Yeah, Jack. Spank that big, beautiful ass of hers." Julia cheered me on from the darkness of the back seat. I saw one of her hands working energetically between her own legs. I guess that seeing her long time sex partner being pleasured was exciting to her also. "No... please, Jack. Don't spank my ass!" Her voice quivered in a credible imitation of genuine distress, but this was all spoiled by the inviting look that she gave me. "Oh. Don't worry, K. Your ass is safe... for now." Her inviting look turned to a puzzled look, in the blink of an eye. I kept my grip on her hair, and swung my open palm up hard between her thighs, making direct contact with her sopping wet pussy. She screamed as she took the smack on her cooter, and her knees buckled satisfyingly upon impact. "Oh god, Jack. Please... no. Please don't spank my tight little pussy." I silenced her with another hard smack. I felt ...