She slipped the silky gown off her shoulders, and sat down on the bed, in nothing but her lacy black bra and panties. Wearing her sexiest underwear helped to get her in the right mood. Her hands ran through her dark wavy hair, then slowly massaged her neck and shoulders. Moving slightly lower, she stroked the tops of her breasts and ran her fingers down her cleavage to play with the clasp at the front of her bra. After pausing there for a while, her hands slid down over the slim curves of her waist, brushed over the panties and down her long, smooth thighs. She let out a long sigh, before her hands worked back up again, this time along the inside of her slowly opening legs, her fingers lingering for a while on the lacy silk before returning up her lean body to the bra clasp again. This time she snapped it open and rolled her shoulders, letting the bra fall open to expose her firm, round breasts. With another slow sigh, she cupped them in her hands, lifting and fondling, then stroking her stiffening nipples with her fingertips. 

Slowly she lay back on the bed, closed her eyes, opened her mouth slightly and ran her tongue over her lips. Her hips started to rock up and down, as if she was being fucked, and she toyed with the waistband of her panties before slipping the fingers of her left hand under it and sliding them down inside. She gasped as her middle finger found what it was seeking, and slowly moved around in little circles.

Her right hand nudged down the hem of her black panties, gradually exposing more and more of her hips and her freshly shaved mound. She lifted her long, supple legs up towards the ceiling and slid her last flimsy scrap of clothing past her knees and off her ankles. 

Completely naked at last, her legs stretched out on the bed and her fingers reached down to her little hood of skin, gently pulling and lifting, exposing but not quite touching the pink tip of her clit. Exploring a little lower, she touched and slightly parted her labia, gradually spreading her legs apart and raising her knees as she did so.

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The cameraman moved in closer between her legs, to get a first close-up of her pussy, blossoming like an opening flower, as if he was trying to fuck her with the camera. She found it disconcerting, trying to masturbate under bright lights, with an overweight middle-aged man pointing a camera at her. Were there no fit young cameramen, to provide her with some suitable visual stimulation? She realised that she wouldn't be able to reach a climax under the circumstances, but she reckoned she could fake it, by screaming loudly and shuddering. She would still get paid, and most of the men jacking off over her would be too stupid to notice the difference between a real orgasm and a fake one, or wouldn't care anyway. But although she couldn't have a genuine orgasm now, in front of the camera, she knew she would have an intense and satisfying one later on, back home in her own bed. The thrill of having exposed herself in her most intimate activity, something she had fantasised about for months, ever since her friend at college, Mandy, had told her she'd done it... and the excitement of knowing that hundreds of men all around the world would be soon be drooling over her and tugging their cocks...

She was wet enough to slip the middle finger of her right hand inside, while the other hand, with the sparkling silver ring on her little finger, worked around her clit, stroking and rubbing more vigorously than before. As her finger withdrew, she held herself open for a moment, exposing the slick pink entrance for the camera, then put two fingers together and worked them inside, gasping as they went in deeper. She arched her head back against the pillow, and opened her mouth wide, even though she knew that according to the guidelines they had agreed, her face wouldn't appear in the film. 

Her slender fingers worked up and down inside her pussy, massaging the front wall, pressing forward as if trying to reach her other hand on the outside, making a squelching noise to compete with her heavy breathing and moaning. Sometimes it wasn't even clear to herself what was real and what was acting. She thought she should spend another couple of minutes gasping, rubbing and pumping, heaving her hips up off the bed, and then she would finish things off with a convincing bit of sheet-clutching, leg-thrashing and screaming.

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Tom clicked the pause button and reached for a couple of tissues, sensing that he was going to need them very soon. They were called "Man size" on the box, so this was clearly the purpose they were intended for. He gazed at the frozen frame of the beautiful young girl's open thighs and wet, pink slit. This was such a hot video. It was called simply "Perfect Pussy", and formed part of a series called "British Dorm Girls". It was definitely a good one to finish on. It was time to bring things to a conclusion anyway, as he'd been at it for nearly an hour and he knew that if he carried on for much longer he would be sore afterwards. She was so gorgeous. He wondered if he'd seen this one before. It was marked 'new', but the girl's long, delicate fingers and the silver ring on her little finger seemed slightly familiar. It was a pity he couldn't see her face. Perhaps he'd seen her in another video.

Suitably prepared, he clicked play with his free hand that clutched the tissues, while his other hand remained wrapped around the base of his shaft, squeezing and moving very slowly. He knew he couldn't risk touching his cock higher up yet, until the girl in the video started to scream and spasm. He had to get the timing right. It felt as if he was walking along a cliff path, trying to go as close to the edge as possible, but without falling over, until the final moment.

The girl withdrew her two lubricated fingers, brushing them together and moving them apart, showing a little string of fluid connecting them. As if in sympathy, as Tom squeezed his firm base, a little drop of his own clear liquid oozed out, and gradually ran down the length of his cock onto his fingers. He gazed at the girl's beautiful, open cunt, and groaned as he tried to think what it would feel like if his cock, rather than her fingers, could be slipping deep inside her tight, wet flesh. He grunted and groaned as he fantasised about her juicy young cunt working all the way down his cock, massaging him firmly, while she cried out, begging him to fuck her hard, calling out for his huge cock to give her the orgasm she desperately needed.

The camera zoomed in even closer between the girl's wide-open thighs, and he could tell from her gasping and moaning that she was getting really close. He rolled his balls around in his fingers, still denying his twitching cock the attention it craved. At last, he could see the girl was about to come. 

He knew that some girls faked their orgasms, but he was an expert, having watched hundreds of female masturbation videos, and he could tell that this was the real thing. There were the tell-tale signs of a genuine orgasm: the fists clutching at the sheets, the uncontrollable thrashing around of her legs, and the loud screaming, in short rhythmical bursts.

He moved his hand up to mid-shaft as the girl started to come. He squeezed and pulled up and down, still gazing at the girl's perfect pussy. Immediately he felt the rush as he reached the point of no return, the pressure building up uncontrollably, then the huge explosion, a powerful contraction as he fired his first spurt into the tissues.

Every night that week he jerked off over the same video, until he knew every second of it, right up to the final shot of her hand splaying her lips open while her pussy muscles flexed and then slowly relaxed.

After the fifth such session, he suddenly realised where he had seen those long, slender fingers, with the shiny silver ring on the little finger. The girl in the video was his niece, Julia...