"Fuck harder, Cliff! Haaarrrddderrr!" Tiffany gasped, tangling both her hands in his curly brown hair and pulling his sweating face down to hers to glue her wide-open mouth against his. Both their wantonly writhing bodies were covered with a film of perspiration, and the bare wooden boards beneath them were dark with their secretions.
Stop them! Stop them!
The frenzied silent command rang out repeatedly in June's dazed brain as every deep-seated moral and religious belief she had, everything her strict upbringing had taught her to accept as decent and good, urged her to cry out and stop this vile fornication… to run forward and pull Cliff off Tiffany… scratch him… beat him with her fists if necessary! The basic foundations of her own character, the very core of her being, seemed somehow to be under attack, but she stood there in the darkened parlor helplessly rooted to the spot, prey to an eerie never-before-experienced sensation deep in her dully throbbing vagina, watching with a growing excitement as the mindless two-headed monster on the floor thrashed violently in the throes of approaching orgasm.
"Stick your finger up my ass!"
Tiffany unglued her mouth from Cliff's long enough to hiss out this lewd order, and June saw her fiance's outstretched middle finger began to immediately probe up between her sister's girlish buttocks until it found the tiny puckered little hole and jabbed hard through the elastic ring, disappearing up to the second knuckle.
"Aaaaaarrrrgggghhh!" Tiffany groaned feverishly. "Goooooodddd, Cliff! Fuck me up there with your fingers, fingerfuck me up my ass. Aaaahhh yess, it huuurrtttss goooodd! God, I wish you had another beautiful big cock like the one in my cunt to stick up there. Uuuunnnhhh!" the seventeen year old girl grunted in total abandon as Cliff rammed a second finger up her rectum and began to pump his hand rhythmically in and out between her flat-spread ass-cheeks with a circular reaming motion, stretching wider and wider her tight nether ring which was already well-lubricated by the steady stream of vaginal secretions flowing down from her avidly sucking pussy.
June watched… transfixed by the twin horror of the lewd spectacle going on there on the floor in front of her and what was going on in her own love-starved body against her will. Her entire pelvic region was on fire with a violently tingling prurient sensation more powerful than any she had ever felt before, and she had the insane urge to throw herself on the floor right beside the wildly fucking couple and savagely masturbate herself to orgasm along with them! In her mind's eye she could see herself doing it! See herself tearing off her panties and thrashing nakedly on the floor next to them, sharing their vile enslavement by the tyranny of flesh.
God, what was happening to her? She could feel a wet hot slipperiness running down her inner thighs. She had never been aroused like this before, not when she masturbated, which was hardly ever, and especially not when Cliff had made love to her! It was at that instant that the seed of the terrible fear which was to torment her in the months to come was sown in her mind. She had read about voyeurism… about people who could achieve sexual satisfaction only by watching others make love… Was she one of them? Was she abnormal? Did that explain the insipid feebleness of all her previous sensations compared to the inferno of desire raging in her loins now?
Then Cliff did something which swept all these blurred half-formed thoughts from her mind and concentrated her attention totally on the lascivious sight on the floor. Slowly, with a loose sadistic grin on his congested face, Cliff drew his long white cock all the way out of Tiffany's frothing cunt with a wet squelching noise while the young girl moaned out her desperate frustration.
"Oh Goddd! Don't stop now, Cliff, you can't stop now!" she pleaded, arching her back and straining her hips up off the floor after his retreating cock.
"You said you wanted two cocks," Cliff gloated down at her. "Well, that's what you're gonna get, baby doll. This'll be something those high school punks never did for you, I'll bet my bottom dollar."
He pulled his fingers from her rectum, and, with one brawny arm, pushed both her slim legs all the way back so that her knees crushed her lushly ripened breasts against her chest. With his other hand he guided the pulsing blood-engorged head of his thick cock down her soaked cuntal crevice to the tiny hairless anal hole which glittered and puckered in the afternoon sunlight slanting through the porch screens. For a moment, as he began to press into her tightly puckered anus, neither of them seemed to move, and, in the bright sunny yard beyond them, nothing stirred, not a leaf or blade of grass. June, standing in the darkness of the parlor… waiting with bated breath for the brutal lunge that would try to force that enormous bell-shaped cock-head up her sister's rectum… knew that, if she lived to be a hundred, this ghastly tableau of unspeakable lust would remain indelibly etched in her brain. Her knees trembled. She felt weak and her breath came in short stifled gasps as she waited with a quaking feeling of vicarious dread deep in her bowels.
"Oooooh, noooooh, waaaiiit!" Tiffany whined as Cliff twitched his powerful loins, and the mammoth head of his penis finally popped through the elastically resisting ring of flesh. He paid no attention to her pleas, and began to skewer in and out of her forever-stretched anus, penetrating farther and farther up inside her hot little rectum with each cruel stroke until at last his long thick penis was embedded all the way up inside her anal passage with his hard male pelvis locked securely against her quivering ass-cheeks.
"How does it feel, baby doll? You like fingers up there. Shit, you ought to love this!" Cliff said, leering triumphantly down at the nakedly pinioned girl with the sweat dripping from his face onto the rippling tautness of her belly. June could see his sperm-charged balls jerking slightly as his penis throbbed mightily inside her sister's painfully stretched rectum.
"Oh God, it… it burns," Tiffany moaned. "But it… I never felt anything like it before."
She reached down between her legs and began to feverishly rub her inflamed clitoris as Cliff started to fuck in and out of her little anal opening with hard twisting strokes. An expression of vicious satisfaction appeared on his handsome face as he watched his thick glistening cock vanishing completely up into the depths of her bowels, then reappearing on the withdrawal stroke with the pink flesh of the tight anal ring clinging voraciously to the rock-hard shaft.
And June watched the same lewdly exciting sight as he, barely aware that her skirt was hiked up around her waist and that her hands had swarmed down into her panties with a will of their own, one in front and one behind, as she frenziedly stroked her own wildly tingling clitoris and dug one long slender finger down between her buttocks desperately searching for her own anal opening. She gasped and a shiver of erotic delight racked her body as the finger finally wormed its way up into the moistly heated canal of her own rectum, and the weird tingling sensation she experienced gave her a slight inkling of what her cock-impaled sister must be feeling. God, what was she doing, some remote part of her lust-crazed brain asked her hopelessly, but she couldn't stop… couldn't stop until the obscenely linked couple on the floor did. She was like a marionette jerked this way and that by the strings of their carnal lust. Her proud beautiful face was bleary with the knowledge of her depravity, and her usually firm determined mouth lolled open slackly as she abandoned herself completely to her voyeuristic fingering of her own love-starved genitals.
When Cliff drew his rigidly pulsating cock out of Tiffany's forever-stretched anus and plunged it back into her juicy little pussy, June's hands flew faster as she pumped two, then three fingers up her wetly dilated vagina, swirling them around, reeling with the sudden unaccustomed flood of pleasure that surged through every nerve-end in her body. God, she had never felt anything so fantastically wonderful as this before in her life.