Kate had spent a very unsettled night trying not to masturbate. She knew she should be disgusted with herself but her pussy was on fire and, no matter how wrong it was, she knew she had to have her brother again.
She had returned to her room with his cum dripping from her face and her pussy desperate for some action. She wanted to wait, however. She wanted to wait until she was taking his cum again, only not on her face but in her cunt too. "God!" she thought; maybe Jack would be the one to finally take her anal virginity and cum up her arse. She was certainly hoping so.
It was no good, she couldn't wait. She couldn't control herself. Knowing that her parents had already left for work and knowing that Jack's bedroom was just across the hall, she got up and opened her door just a fraction of an inch. With any luck he would hear her and join in before she made herself cum.
Returning to her bed, she lay on top of it and reached into her bedside drawer, rummaged around at the very back and finally found her vibrator. Turning it on, she ran it across her breasts, luxuriating in the thrills she felt as the vibrations stimulated her hard nipples. But she wanted more. Closing her eyes, she moaned quietly as she moved down from her breasts, down over her belly, down until it reached her clit.
She thought about Jack masturbating too and imagined him watching her, taking his cock in his hand and stroking it slowly as he enjoyed the show she was putting on. That thought alone was enough to make her body shiver in delight and, much as she was enjoying the thrills running from her clit, she needed more.
Rolling round, she brought her knees up, knowing that if Jack heard her and came to investigate he would have a perfect view of her arse and pussy as soon as he walked in. Inserting her toy into her waiting cunt she began to slowly work it in and out.
Jack had slept like a baby all night. He had cum so many times the day before that he didn't think he would be ready to cum again for some time but, sure enough, when he woke up, his cock was erect and waiting for relief. He decided to switch on his laptop and replay once again the film of his younger sister being fucked by her Headmaster.
As he stroked his cock, watching his sister pleasuring herself even before the older man had turned up, he marvelled at the delights of her body all over again. Small but perfectly curved, her nipples were hard as she played with herself, her head thrashing from side to side as her orgasm approached. Jack could feel his own cum rising just as his younger sister came on camera and he jerked harder and faster, groaning as his cock erupted and his cum was poured down his hand.
When he got up to go to the bathroom and clean up while the house was quiet, he heard a noise from Kate's room. Creeping silently to her door he was delighted to see it was already open just a crack so he pushed it further, just an inch.
The moans of pleasure were getting louder and Jack was only glad their parents had already left for work. As he peeked in to his sister's bedroom, he could see Kate on her bed, on her knees, naked, facing away from him, her arse in the air and a large plastic cock between her legs.
"Where on earth did she get that?" he wondered, but his eyes were fixed on the incredible sight of his sister masturbating and he could think of nothing else for the moment.
Kate had heard the door being prised open just as she had intended. She had given up on her attempt to deny herself and now she was determined to make up for lost time. "Jack already thinks I'm a slut," she told herself. "I might as well put on a good show and prove his point."
Her pussy was dripping from the attention of the plastic cock and the thought that today might be the day that Jack finally fucks her. The idea of her brother plunging into her tight cunt was all it took to put her over the edge. As she rubbed her clit with one hand and forced her plastic toy deeper than it had ever been, her body stiffened and she collapsed face down on to the bed.
"Fuck me," she screamed. "Fuck me, Jack; please fuck me."
It was like an explosion going off inside her as a flood of juices poured from her cunt and soaked her bed. As the waves of pleasure died down, however, she had to stop fucking herself as she was totally wiped out. Keeping her eyes closed, she held her breath as she waited to see what Jack would do next.
"You really are a whore, aren't you, Kate. Get dressed; we're going out."
Kate had jumped up as soon as her brother had opened his mouth to speak, pretending to be shocked by his presence and shocked that he had seen and heard what she was doing. Jack, in turn, simply turned and went back to his room. He had to think about what he had just witnessed and, even more urgently, he had to do something about the huge erection that was sticking out of his shorts.
When Kate knocked on his door shortly after, however, her appearance had his cock tingling again and he wondered if he was fighting a losing battle. She was wearing a tiny black skirt that barely covered her decency and a tight white top. The fact that her hard nipples were poking through the thin cotton made it obvious that she was not wearing a bra. "Surely she has at least put on some panties," Jack thought, but secretly hoped she hadn't.
Kate tried to hide her smile as she saw the shock on her brother's face. "That should get him going," she thought to herself as she watched him struggle to rearrange his trousers, trying to hide his growing erection. "Men are so easy," she thought, but hid her smile, reminding herself that she was still playing the innocent victim with her brother.
"Where are we going, Jack?"
"I'm taking you for a drive. I don't want to be disturbed by any neighbours or deliveries. What I have to say to you is far too important for that. And put some clothes on, for God's sake; you look like a cheap whore."
That was exactly the look Kate had been trying for and she was delighted that he was taking her somewhere else. The idea of having him fuck her in their parents' bed was appealing but, he was right; they didn't want to be disturbed. They went out to his car together and got in, Kate trying to show off as much of her body as possible while Jack continued his ongoing struggle with his rampant cock.
He drove to one of the many secluded spots he knew in the hills and parked the car. During the drive Kate had sat demurely in her set with her hands clasped in her lap, innocently sliding down the leather seat, slowly, revealing her naked legs, inch by inch. Each movement caused her skirt to ride even higher up her thighs until the hem was almost touching her panties. She made sure Jack got a good look before she sat up straight and started the whole process again.
By the time they arrived, Jack was having difficulty keeping his eyes on the road and even more difficulty driving at all as his cock strained for release. He had dreamed for some time about what he was about to do but, now that the moment had arrived, he wasn't sure exactly how to proceed. As he parked the car he decided to stick to his original plan and to blackmail his younger sister.
