The girl at the counter

Parker eyed the attendant at the counter from behind the aisle, the woman somehow oblivious to the twins' vigorous fuck session. That wouldn't last long.

"Alright slut, here's what you're going to do," Parker said to his sister turned fucktoy, who listened compliantly. "You're going to sneak up to her and grab her so she can't run. Then I'm going to teach her what happens to people who ignore their customers." His cock twitched at the thought of the fun to come. He looked at his slut, who was still staring at him. "Well, what are you waiting for? Go!" he said, shooing the brainless girl away. He had always thought fucking a girl stupid sound good, but now he wasn't so sure.

Parker didn't dwell on it though, as a moment later the was a crash as Rachel tackled the unaware girl, the sight of her tremendous breasts and wanton face shocking her long enough for Parker to rush over and pin her down.

"What the fuck?! Who are you two? How did you get in here?! Let me GO!" she yelled, struggling as best she could. Parker was having none of it though, throwing her her against the counter and holding her there.

"That's not right, slaves don't get to ask questions," he said cruelly, pressing her chest further into the wood. He quickly jerked her pants off, revealing an average butt that he would have been more than happy with as his old self. Now, all he saw was room for improvement. Likewise stripping the girl of her shirt, he held her down despite her protests.

"Rachel, masturbate over there," he said, pointing to the other side of the counter. "Show this bitch what I made you while she was texting. Rachel obediently followed orders, any thought of herself or anything other than her master's orders nonexistent. She went to work, finger fucking herself right in front of the attendant, her other hand pinching her erect nipples.

"That's what you're going to be soon," Parker said, lashing the girl across the ass with one of his whips. She cried out in shock, prompting Parker to whip her again. "I'm going to make you into nothing more than a slut who can only beg for my cock."

"Ahh, stop! Please! No more!!" she screamed as Parker relentlessly hit her buttocks, the firm flesh shaking slightly with each strike. Parker didn't let up though, his strikes only falling harder. Despite her best efforts, the woman felt herself getting turned on by his unrelenting whips. Every smack of his leathery appendages made her pussy just a little damper. Soon, she was panting with lust when Parker's strikes suddenly stopped. She whined quietly.

"What's wrong, cunt? I thought you wanted me to stop," Parker said cruelly, giving her a light smack. "Unless you don't want me to stop anymore?" he asked, smacking her again. The girl whimpered, but didn't say anything. Parker changed his focus, lashing his sister across the chest, sending one of her large tits quivering. Rachel orgasmed on the spot, her eyes rolling back as she continued to diddle herself, not having been told to stop. Parker whipped her again, redoubling her pleasure. "Look how good she feels," he said to the girl on the counter. "You can feel that good too. You just have to beg for it. Beg for your master's whip!" he roared, hitting her hard on the ass again, making her cry in pain and joy.

"Whip your bitch master! Please let me feel it!! I need it!" she screamed, her will already broken. Parker lashed her mercilessly until he jammed one hand into the girl's cunt. The combined stimulation of his continued hits and thrusting at her core was enough to send the attendant over the edge, orgasm consuming her. She shook on the counter for a minute before collapsing in exhaustion.

"Now I'm going to make sure you know who's in charge, slut," Parker growled, pumping his cock, which was still slowly extending from when he had cum in his sister, now reaching just over a foot long. He palmed his victim's ass, enjoying the tightness, before trailing his hand slick with her cum up to her asshole. He swiftly lubricated it and his own drooling rod before pressing into her tightest hole.

The girl bucked wildly, anal a new experience to her, but she found pleasure in the pain, relishing her new master's dick pressing further and further into her bowels. She felt his cum fill her as he ass overwhelmed him, but the two kept fucking, Parker's cock reaching deeper into her than she thought possible. The bulge of his cock reached to her abdomen, then her stomach, before pushing into her chest. She knew that was wrong, but the joy she felt at his continued intrusion overrode any fear she had. She moaned in pleasure as his cock extended further and further through her body, until something pressed at the back of her throat. She orgasmed again, and Parker's cock head appeared from her drooling mouth, shooting cum to land on his sister's face.

"Uh, yes bitch, you're my fucking cock-sleeve," Parker grunted, able to feel every inch of the girls insides massaging his huge length as it made its way through her virus-altered guts. "Take my whole dick. Get over here and let me fuck your cunt through this bitch, ****." Rachel rushed over and impaled herself on Parker's dick as it emerged from the corrupted shop girl's mouth. Parker felt the girl's butt grow to massive proportions as her changes finished, ensuring her ass was one he would never get tired of. He roared as cum surged from his balls, shooting through the newly infected girl turned cock-sleeve to spill into the cunt of his brainless slut of a sister, the women both shaking in orgasm with him.