Twinsest!

Chapter Four

Molly

Holly's arse cheeks resemble a pincushion as she stands by the sink and washes up all the dishes. I fondle them gently, lovingly, teasingly and feel her react, body easing back into me before a shudder runs through her as I whisper softly into her ear what I am going to do to her next. I want her to anticipate the agony that awaits her when I get her back upstairs again so I make her bend further forward over the sink and pat her plumped up pussy gently with my hand. Each gentle tap makes a little shiver run through her flesh and I know she is thinking about how much hurt the kiss of the whip is going to impart.

Her blue eyes are wide and fearful a few minutes later when I have bound her back to the bench, legs wide again to reveal the enormous lips of her labia. They seem to be three or four times their normal size and I am intrigued by the possibilities in future, considering sending her to work with them puffed up and the chastity belt chafing away at them all day. I pick up the multi-thonged whip I have decided to use and swirl the ends rapidly round through the air, hearing the swishing sound as I watch my sister's body tremble in fear and desire. I know that she will welcome the agony and use it to crest up towards nirvana. She knows that I will gain intense pleasure from causing her pain. We are in a symbiotic relationship, each dependent on the other and both of us would not have it any other way.

I move my hand closer to her, twirling my wrist so that the thongs circle through the air like a spinning wheel. Her breathing quickens and I see her breasts rise and fall and then comes the first gasp as the thongs skim over her swollen slickness. I keep swirling the whip round and Holly bites her lip, drawing a single bead of blood as pain flows like a river deep into her flesh, stinging away at the softness. She bucks hard against the restraints but can do nothing to escape. Her only choice is to endure as I whip her pussy, teasing the fronds of the whip up and down the exposed pinkness until I can see how close she is to exploding into passion as the pleasure starts to override the pain. I stop then and let the whip dangle down by my side as I lightly touch her puffy labia, feeling my fingers become coated with her leaking essence while she looks up at me, eyes silently pleading because she knows better than to ask for release.

I wait for several minutes, idly toying with my plaything, moving my fingers from her sex up to her breasts so that I can tweak them painfully. I bend down and kiss the raspberry buds gently in turn before biting them, eliciting gasps of pain before I move away and find a pair of nipple suction cups. It only seems fair to do the same to the tasty little nubs as I have done to her pussy, doesn't it? Her azure eyes widen as pressure makes her nipples swell and then I straddle the bench, raise my skirt and sink down onto her face, trapping her under my soaking slit as I raise the whip again. Her tongue works feverishly in my wetness as I twirl the thongs round once more and flick them over her trimmed thatch of blonde hair and down further into the pink puffiness of her pussy flesh. I can feel her exhaled gasps bathing my sensitive centre as the whip sings a song of sensuous pain across her body, reddening the delicate skin of her inner thighs as well as her pussy. My skin tingles with delight and I feel ripples slithering up through it from my clit as her tongue laps and licks away expertly.

Holly

I slurp and slither my tongue all over my sister's wetness, teasing her clit with the tip then plunging it in deep to taste her innermost being as the devilish thongs of the whip torment my own pussy with tongues of fire. Despite the pain, or maybe even because of it, I feel the rush of pleasure in my senses and I revel in serving Molly, just as I always have done from the very first time she had allowed me to kneel before her and kiss her sweet mound. It had been hairless then but now the softness of her bush tickles my nose gently as I lap away fervently, feeling her excitement trickle all over my face as she gradually edges closer to coming. That is my delight in life: to please my sister by serving her in any way that she wishes and I feel a sense of achievement and fulfilment every time that she wriggles and writhes on the end of my tongue, baptising me with her sweetness. I know she is close as her buttocks squash down harder on my face, almost cutting off my supply of air as my tongue wiggles and tickles over her swollen nub until abruptly she stands and leaves me almost in tears at not achieving my aim of making her climax.

"Oh no, my naughty little sister, I don't think you deserve to feel me come and offer you my love juice," she murmurs before she walks away. I lie there almost in tears at being denied, my own arousal ebbing fast even though my labia throbs with every pulse of my heart. Molly returns and removes the suction cups from my nipples and I hiss out in pain as she adds clamps instead onto the tender, swollen buds. The clamps are linked by strong elastic which pulls constantly at them and my eyes widen as she shows me more elastic which leads to another metal-jawed clamp. I almost beg her not to but I know that my pleas will have no effect on her at all and so I lie there and try not to panic as she teases the nub of my aching clit out from under its protective hood. I cannot do anything but squeal though as she lets the jaws close around the delicate, sensitive flesh. The red rush of pain flows through me in a torrent and I hyperventilate while tears trickle down my cheeks.

I look up through the misty veil of my own agony and watch Molly tease the end of her favourite strapless strap on vibrator up inside her pussy. She smiles at me and waggles the other end suggestively, stroking it up and down with her fingers before she moves in between my spread legs and nuzzles the knob against my aching, tormented labia. The slowest of movements begins to open me up and I can feel the pleasure instantly mingling with the pain as my puffy folds are pierced, eased away from the fat head of the phallus. Molly stops and toys with the elastic, pulling it slightly but even that causes another flood of agony to rise up through my senses and fresh tears to leak from my eyes. The jaws of the clamp seem to grip even tighter around my clit and my nipples throb in sympathy. She releases the elastic and inches the strap on a little further up inside my tight tube before repeating the teasing, making me gasp and shudder.

Eventually, all of the thick cock is ensconced snugly inside me and she bends forward and starts to shaft me slowly, resting her hands on my breasts and making them jiggle gently. I am in heaven and hell simultaneously as pain and pleasure intermingle in both body and mind. Every nerve ending is screaming at me as the clamps move as she does. My bud feels like it is going to explode as it throbs against the relentless grip of the metal jaws and my face is soaked with tears. I can hardly see the beautiful face of my sister as she rides me, increasing the pace and slamming the thick length in and out of my stretched pussy walls and edging me ever closer to rapture even as she nears the brink too. I can tell by the little gasps and cries that echo round the room and that knowledge brings me to the brink.

Molly

I stare down at the tear-stained face of my sister and love the sight. She only cries when she is in extremis and I know that she will remember this session for a long time to come. I can sense how close she is to coming and that adds to my delight and I move quicker, pumping my hips back and forth until the fat cock pistons in and out of her tightness. I reach down and pull at the elastic and her body begins to buck against the restraints and then I pull the clamp on her clit right off just as she starts to come. There is an anguished cry from the depths of her soul and I watch in fascination as spurt after spurt of love juice starts to shoot out of her stretched pussy every time that I pull the head of the strap on back far enough so that just a tiny bit remains inside. My own control slips away at the sight and I lean over her and kiss her, mashing my lips down on hers and poking my tongue inside her wet warmth, gasping out my pleasure into her waiting mouth. My body shudders and shakes against hers, my breasts crushing hers so hard that I can feel the clamps on her nipples painfully on my own softness. Languor and lassitude slither up my flesh after the crisis of my climax and I rest there, still kissing my sister passionately and licking up the salty spheres that roll down from her closed eyes.