"Are you watching, Marcy?" Karla's voice seemed to come from a long way off. "Can you see where we are joined? Can you see how my brother's cock enters me – how his flesh becomes my flesh?"
"Yea… yes," Marcy choked. "You're beautiful."
"Beautiful? Are you sure, Marcy? Don't you mean obscene? Do you fully realize what Kyle and I are doing – that incest is the worst kind of sinning? That ordinary people consider it the most heinous of crimes, and would send us to prison if they found out? But you won't tell on us, will you, Marcy? There's something in you that finds our incestuous fucking exciting beyond anything you ever imagined. Look at you with your fingers in your pussy and your face almost touching us!"
"Oh God… God…" Marcy felt the soft, smooth flesh of Karla's thighs brush her cheeks, and her pert bottom push against her forehead, using it as a brace. The spicy, exotic perfume combined with the musky woman smell had an allure all its own. Marcy's mouth began to water, to yearn for some sweet fruit it had never known.
Karla was riding slowly up and down on the cock, watching Marcy over her shoulder. Marcy's fingers were shoving in and out of her soaking pussy, and she watched Karla sink all the way to the roots of her brother's manhood, and then with a loud sucking sound slip back upward.
"Ohhhhh… so groovy!" Kyle moaned, lifting his buttocks from the mattress to keep his shaft buried in his sister even as she pulled away.
Marcy could smell the tang of Kyle's cock along with Karla's feminine musk, and it made her tongue flicker out and lick at her dry lips. Karla was sliding back down the slippery pole, and squealing with pleasure at the feel of the big prick in her.
"Ohhhh, that's so gooood! I can feel that brotherly prick touching the very bottom of my cunt. Oh fuck me, Kyle, fuck me! Give our little friend here the thrill she craves, but do it for us too, and make it as perfect as it always is when we screw each other!"
Marcy knew that most of the talk was to excite hey further, but she didn't care. Karla's thighs were rubbing against her cheeks, and her nostrils were filled with the mixed odors of the girl's reddish-gold glory, and her brother's hot shaft. Her head was spinning from the miasma of erotic smells that swirled in her brain, filling it with wild lusting images that caused her buttocks to circle slowly. Her fingers became wetter and more frantic in the steaming vault of her sex.
"Do it, Karla… fuck your brother… oh Karla, darling," Marcy babbled, as she watched the girl lift herself time after time and saw the swollen-lipped pussy swallow the full length of Kyle's cock as he thrust up to meet her.
Karla's breath was coming in gasping little sobs, and Kyle was panting as the tempo of their movements and their excitement increased. Marcy could see the joining of the two golden bodies, and hear the slurping sounds of hard man meat driving in and out of soft wet cunt. The sight and the sounds were driving her wild.
"Deeper, brother mine, deeper and harder!" Karla howled, and Kyle arched his back and sent his pelvis upward, bouncing his sister toward the ceiling as he buried himself to the hilt in her.
Kyle grunted then, and Marcy's face was so close to the interlocked flesh that she could see the throbbing pass through the stretched skin of his cock. The blue veins up its side swelled suddenly just before the torrent of his orgasm flooded into his sister's pulsating pussy.
Marcy's fingers were twisting in the swampy depths of her sex as she watched the hot cream fill Karla and run back down the shaft. She could feel the heat of the cock juice and smell its musk. She could almost feel what Karla must be feeling as it spurted deep into her inner recesses. She heard the other girl moan, saw the pert buttocks roll with pleasure, and then heard the gasp of Karla's cuming. Engulfed in a fog of their combined aromas, and with Karla's thighs sliding sensuously against her cheeks, Marcy became aware that her head was resting on Kyle's legs. His sister slowly and reluctantly removed her dripping sheath from his still-hard weapon.
"How was that?" Karla asked, rolling off her brother. "Did we make you cum?"
"Not quite," Marcy said, her fingers still unashamedly deep in her pussy, and her glazed eyes riveted to Kyle's unflinching shaft. "It hasn't gotten soft yet. Even after that, it's just as long and thick as before."
"Yes, isn't that nice?" Kyle said, almost smirking as he looked down at the tower of his manhood rising from the thicket of red hair between his thighs. "It's one of the blessings of a good heritage."
Marcy's hand reached out to touch the jutting pole. Her fingers stroked up and down the sides, still slick with Karla's juices and his own. It pulsed slightly, and her hand tightened around it hungrily. She wanted it in her mouth or in her cunt, and she didn't really care which.
"You did that, baby?" Karla whispered, reaching around the girl to rub her palms over her turgid nipples. "You like hard cock?"
"Yes, yes," Marcy mumbled.
"She's really something, isn't she?" Karla laughed. "She's nearly out of her head just from watching us. Look at her! I don't think she even knows where she is. We could do anything we want with her."
"Darling, we are going to do anything we want with her," Kyle said, grinning at the way Marcy was clinging to his cock with both hands.
The head of the erect shaft throbbed against Marcy's palm, and the fingers of her other hand curled under the heavy balls at its base. She lifted them slightly, delighted at their heaviness, and at the wiriness of the pubic hair that surrounded the cock and spiraled up onto the base of his belly. Then, as Karla moved around to the side of her, she took one hand from the hard male flesh and slid it to the mound between his sister's thighs, her fingers searching along the puckery cunt lips, still stretched from the recent fucking.
"Why don't we get into the water now?" Kyle said. Karla nodded, and they each put an arm around Marcy and lifted her between them, before stepping off the edge and landing in warm water up to their waists.
"Isn't this nice and sexy?" Karla said, swinging Marcy around to face her, the motion of their bodies making the water splash up onto their breasts.
Putting her hands on Marcy's waist, Karla drew her close. Marcy gasped as their naked bodies came together, never having dreamed women's bodies could fit together this way. Breasts sinking into breasts, bellies clinging against bellies, and thighs twined, they balanced themselves with their feet wide apart. The most deliciously intimate and erotic touching was, of course, at the apex of the two sets of legs. Marcy felt the cushiony mound of Karla's cunt pressing into hers, and the rotating pressure of wet flesh opened the seeking cunt lips and flattened them against each other. Marcy's clitoris swelled and throbbed, as Karla's hard little bud touched and circled it.
Kyle splashed water on them playfully for a few minutes, and then came up close to join the fun. He ran his hands caressingly over his sister's gently undulating buttocks, while he kissed her neck and shoulders and finally traced his lips down her breasts to where they joined Marcy's. Then he did the same thing in reverse for Marcy, his hands coming up between them to fondle both pairs of breasts and pinch the nipples, until both girls moaned with passion.
Reaching for a bar of perfumed soap, he began to work lather all over them. Marcy made a purring sound as he reached from behind her to spread suds over her breasts. Then he did the same for Karla. His hands stroked and teased, fondled and caressed, and traveled over shoulders and backs and buttocks and around to the soft bellies. The slippery, sliding feel of soapy hands on already sensitized skin caused thrilling sensations Marcy hadn't been aware existed. And through it all, Karla managed to keep their revolving, burning pussies locked together.
Marcy was amazed at how easy it was for her body to respond to a woman's, and at how deep the mutual pleasure was.
And Kyle was doing everything possible to increase that pleasure. His hands were everywhere at once. The soap rubbed down Marcy's spine, over the moons of her buttocks, and dipped into the crevice between. Then he was lathering his sister's pert bottom and golden flanks. Up his hands came, separating the bodies briefly, except for the gently rotating love nests, and resoaping their breasts and bellies, working long and lustfully on Marcy's hard nipples and his sister's large, pointed ones.
"So much titty," he murmured, bending to pull each nipple in turn into his mouth, and suck hard until all four stood erect in rigid thickness.
Marcy's breath was coming in quick little gasps, as Karla shifted position slightly and rubbed her clit downward to tease the open lips of Marcy's palpitating cunt. The tiny, stiff nubbin excited Marcy until she could hardly stand it.
Kyle's hands were on their bellies, dripping lather and letting the suds seep between the joined cunts. His fingers followed the soap, and Marcy felt them force the labia apart. The sting of the soap on the delicate flesh only served to arouse her more, especially when a finger worked its way into her cunt.
She moaned aloud when the finger was withdrawn so that Kyle could do the same for his sister. Marcy reached out blindly to find Kyle's flat belly, and stroked down it to find the surging shaft of his manhood.
"You like that prick, baby?" Kyle said huskily. "You want it?"
Karla's hand joined Marcy's, her fingers encircling the thrusting cock just below Marcy's.
"My God," Kyle groaned, "you want it too, Sis? So soon again? Looks like I'll have to take you both at once."
But the two pussies were locked together again, and Marcy was panting as she ground into the other girl, thrusting frantically in her efforts to find release.
"Hey, she's about to cum," Karla laughed, and used both hands to crush the girl to her. "Wow, I never knew a chick who could cum so fast from just a little friendly cunt rubbing."
"Are you cuming, baby?" Kyle breathed in her ear, his hands moving up to her breasts and squeezing hard. "Are you about to cum and overflow with groovy cunt juice?"
Marcy hardly felt his touch or heard his words; her whole being was concentrated on the furnace of lust his sister was fanning into an all-consuming blaze by rubbing into her cunt lips.
Marcy trembled, and Kyle slid his hands down to her belly, his fingers pressing rhythmically at the very base of it. "There she goes!" he said, just as Marcy sobbed convulsively and her vaginal muscles quaked with her orgasm.
When it was over, she sagged weakly against Karla. "Thank you," she murmured.
"That was nothing," Kyle said, turning her around to face him. "Feel what I've got for you."
He thrust his hips forward and bucked against her, not entering her, but just pushing his cock so close it rested lengthwise between the lips of her cunt. Fresh waves of lust swept through Marcy, and she could feel the labia tightening as he teased the head of his cock along them.
"Does it feel good? Do you want it?"
"Yes – oh yes," she said. "Give it to me!"
"Gladly," he said, getting his hands under her bottom and tilting her backward into Karla's arms. Marcy's legs floated up on either side of him, and he stepped forward, the resistance of the water holding him to an exquisite slowness as the head of his cock started to push between the receptive folds of her cunt.
"Ohhhhhh," Marcy moaned, as Karla inched her upward until Kyle could place his hands on her waist and she could reach his shoulders. Then she clasped her heels at the base of his spine and began to ride him, feeling the marvelous friction touch every nerve ending in her throbbing vagina.
He didn't stretch her as Dr. Villiers had. The tip of his shaft rested comfortably against the far end of her canal, rather than threatening to shove on through her back when he was in her fully. It wasn't as wildly painful nor as incredibly erotic as being assaulted by the doctor's cock, but it was more than adequate. She could grip it with her inner muscles and feel them suck him deep as she pulled herself toward him and then pushed away, the water and Karla supporting her as she savored the delightful fucking.
Then Karla gradually let go of her and circled around their joined bodies, examining them from every angle. "I hope Dr. Villiers is getting a good shot of this," she said. "You two look splendid coupled like that. But maybe I could add to the total picture, not to mention your enjoyment, if I made it a threesome."
Marcy didn't pay much attention to the words, but when passionate kisses began to rain on her back and shoulders and buttocks, she knew what Karla meant. Then the red head squeezed between Kyle's chest and her breasts, and a mouth like a suction pump fastened on one nipple and then the other. Karla's fingernails scratched lightly down the crevice that divided the cheeks of her ass. Marcy gasped and lunged violently forward.
"Stop that!" Kyle said to his sister, holding Marcy tight against him for a moment. "You want it all to be over before it barely gets started?"
Karla giggled and transferred her attention to him. He had spread his legs wide to balance himself, and now began a gentle rocking motion to help Marcy slide back and forth along his prick while she rotated her pelvis and flexed her muscles to suck him deeper. Karla stroked and kissed her way down her brother's back and thighs, and when she reached his knees, she ducked underwater and came up directly under their interlocked genitals. She reached out a finger and touched Kyle's cock as it surged in and out of Marcy, then laid her finger along the length of the prick and let it ride into the cunt.
Marcy and Kyle both reacted strongly to the extra stimulus, and Karla broke through the surface of the water laughing. Then, as Kyle started pounding into Marcy so hard she was almost knocked from her perch, Karla got behind the other girl again, wrapping herself around her back and rubbing the big, pointed nipples up and down her spine. She curled around Marcy so tight that it seemed as though she must be trying to capture part of her brother's surging flesh.
Marcy gasped as the furry wet lips of Karla's pussy rubbed against her ass cheeks, and Karla's breasts jabbed into her upper back. Karla's fingers manipulating her breasts, plus the hard meat filling her, was driving Marcy berserk with lust. Her breath rasped in and out, and she raked her nails down Kyle's back as she jerked and writhed against him.
"Go baby, go!" Karla urged, working her fingers down to where her brother's prick was embedded in Marcy's blonde pussy. She found the girl's clit and began to massage it, while Kyle rammed in and out of the hot slit below.
Marcy let out a wild yell and came in a frenzy of movement, her head rolling and her heels kicking. Then she felt the throbbing of Kyle's shaft, as though her spasming cunt had pulled him over the precipice into pleasure's deepest abyss. The hot gush of his ejaculation filled her to overflowing.
Marcy sobbed with joy as Kyle shuddered and smashed into her again, emptying himself completely into her cunt.
When he finally disengaged himself from her and set her on her feet, he gave her a little swat on the butt. "Wow, you almost sucked me dry, you hot-cunted witch!"
"And I feel as though I've been run through a wringer," Marcy said, sinking down into the water to rinse off the last of the soap.
"You two stop talking like that," Karla said. "I've only cum once and my cunt is burning like fire. Don't you dare be worn out!"
"You know me better than that, doll," Kyle laughed. "Remember that night in Acapulco when I fucked you in the mouth, in the cunt, and in the ass and still had enough strength left to sodomize the bellboy and blow that bearded actor, what's-his-name?"
Marcy did feel a little tired. In the last two days she had engaged in more sexual activity than she had ever dreamed of doing in her whole life. She had been fucked, had her cunt eaten, and blown a man. It was all kind of scrambled up and run together in her mind, and she told herself it didn't matter how much more she did. Some other time, in some other world, she would rest. Right now, she would gorge herself on all the male and female flesh she had access to. She plowed through the water and clambered up onto the slanting side.
"Lie down, sweet Marcy," Karla said. "Just lie still and rest and let us both make love to you."
Marcy stretched out, flinging her arms and legs wide. The Karlows came to her, one on either side, and crouched beside her, their flushed faces close to her breasts.
"Love apples," Karla breathed, cupping a mound between her hands. "Firm, crisp, delicious love apples." Her lips fastened greedily on a nipple, and she began to suck.
"And I'll eat this one," Kyle said, and began laying it all over with his hot, wet tongue.
Marcy looked down at the two red heads, and listened to the sucking, slurping sounds of the two mouths. Then she lay back and let the fantastic pleasure quicken and reheat her blood.
She let herself drift in a lustful haze as four hands moved over her body. She could distinguish between the slightly heavier masculine ones that crawled up one thigh, and the lighter-fingered feminine touch that tickled like feathers across her belly. But both were moving steadily toward the same target.
What a strange sensation it was to lie there in a few inches of warm water and feel these two golden people worship her body. The Marcy of three days ago would have been shocked and horrified at the mere thought of having sex with another woman; she would have been incapable of imagining fucking a man and a woman at the same time, much less a brother and sister! But that was the pre-Dr. Villiers Marcy. This was the new, liberated Marcy, and she was not only doing it, she was thoroughly enjoying every second of it.
"Taste this tit, Kyle," Karla said, holding it toward him. "It's sweeter than that one."
Kyle's long, auburn hair fell down around his face as he leaned over to take the proffered breast. He licked at the elongated peak his sister had sucked, and then began to pull on it himself.
Having distracted him temporarily, Karla's lips traced down along Marcy's ribs and over her abdomen to the raised mound that had been her goal from the start.
Marcy reached out a hand to each of her lovers. She touched Kyle's strong young buttocks, and stroked them lightly before moving on to his thighs and flat belly. The other hand encountered Karla. The girl had turned around, and her pertly rounded bottom and the backs of her thighs were directly in Marcy's line of vision. In a kneeling position, with her head lower than her up thrust rump, Karla's red-thatched cunt was unguarded and available. Marcy's caressing fingers lovingly stroked the firm half-moons and satiny thighs, and then crept forward to seek the hot, moist flesh of that steaming slit.
"Ummmm, that's groovy," Karla said, wriggling her bottom and opening her legs wider so Marcy's fingers could tangle in the red hair and gain access to the pink lips underneath.
Karla's mouth was as busy as Marcy's fingers, her tongue licking all over Marcy's belly and dipping hotly into the deep navel. "Hey, you'd have made a great belly dancer," she giggled, as Marcy's surface muscles rolled with pleasure.
Having sucked and nibbled at the tender breasts until he had had his fill, Kyle's lips worked their way down to Marcy's flanks, kissing the flaring hips and setting to work on the thigh opposite the one his sister was licking.
Marcy's fingers were deep in Karla's cunt, examining with deep interest the convoluted inner folds, probing at the sleek inner walls and feeling the tightening of the well-trained muscles. How strange it was to have her fingers inside another woman. This was so different from exploring a man. This was the very center of another girl's being, and she was permitted to invade it as she chose.
Meanwhile, Karla's lips were parting the dense foliage that covered Marcy's mound, licking at a few drops of sperm that remained from Kyle's orgasm. She giggled as she savored it. "Oh, Kyle, she tastes of you! This is wild! To taste your own brother's cum in another woman."
"I know something even wilder," Kyle said, moving his mouth closer to his sister's. "Let me have some. I've tasted the cum of a lot of guys, but never my own."
Marcy's fingers eased in and out of Karla while her other hand caressed Kyle's thighs and belly, and then the thick rod that was now revitalized. She began to slide her fingers up and down its length, lightly squeezing his testicles at one end and rubbing her palm in circles over the sensitive tip at the other.
But something far more exciting was happening to her. Karla's tongue had located her clitoris, and was licking it avidly, hardening it into a throbbing miniature of the male organ Marcy was fondling.
Then Kyle's lips were frolicking through the silken blonde hair, and dipping between the opened cunt lips. While his sister nibbled on the engorged clit, his tongue plunged into the fiery fissure below it.
Marcy's head was spinning again. This was the most fantastically exciting thing that had happened to her yet. Imagine having her clit sucked by a girl while that girl's brother stuck his tongue into her cunt and licked his own cum from her depths!
"You ought to taste this, Karla," Kyle said. "There's a mixture of me and her in here that's out of this world."
"I'm in there too, you know," Karla said. "I rubbed pussies with her until she came, so some of my juice is bound to be in there with yours and hers."
"You're right," Kyle said after sampling Marcy's slit again. "I guess that's what makes it so tasty. Three flavors – just like those giant ice cream cones we used to love as kids."
The Karlows giggled together like naughty children, and Karla's mouth left Marcy's clit and moved down the long gash. "Okay, give me some. I still like three-flavored treats."
In her eagerness, Karla straddled Marcy and crouched down until her bottom was touching the other girl's big breasts. As her greedy tongue lapped noisily at Marcy's pink hollow, she slid farther backwards until Marcy found herself looking up at the tuft of carroty pubic hair and the dilated cunt lips underneath. Startled, she simply stared at the open hole, and inhaled the musky aroma emanating from it.
After a few seconds, Karla raised her head and looked back over her shoulder. "Don't be bashful, baby. Just do what comes naturally. I'm eating your luscious cunt, so how about you gobbling mine?"
That seemed only right, since Karla was helping to turn Marcy's body into a mass of pleasure.
Karla's thighs were on either side of Marcy's head, the silken flesh touching her cheeks as they had once before. The auburn-hued cunt was resting against Marcy's lips, and a drop of spicy juice dripped onto her cheek. Marcy's tongue flicked out and tasted the warm droplet, and she knew instantly that she wanted more.
Now there were two active tongues in her pussy, racing up and down the responsive inner flesh. She imitated their actions, putting out her tongue to lick at Karla's pink pussy. Excited by the wet, slick feel of the membrane and the tickling of the soft hair against her face, Marcy became more bold. Her tongue slid into the opening, seeking the source of the rich aroma that was making her giddy with passion.
Her hand was still moving automatically on Kyle's shaft, and its throbbing rigidity thrilled her and urged her on. She automatically adjusted her caressing of it so that coincided with what her mouth was doing to Karla.
Marcy was filled with wonder at the delight of exploring the recesses of another woman's innermost being. It was incredibly erotic to feel the wet cunt lips flattened against her face, to have her mouth filled with the slippery tissue and ringlets of pubic hair – just as enthralling, she discovered, as it was to mouth a man's prick.
Her tongue was driving in and out of Karla, seeking the depths of her, striving to explore her to the fullest. Karla's whole pubic area was rotating wildly, rubbing the hot, slick flesh and wet, red hair all over Marcy's face. Marcy didn't mind at all, it just added to the passionate fire that was consuming her. It was as exciting as the feel of the talented tongues of the Karlows stabbing in and out of her in perfect unison. It was fantastic how they could keep together so well. It was even more fantastic how they could both find room for their heads between her thighs. But they had said they were the best brother and sister team in the world, hadn't they? They probably had had a lot of practice sharing the same steamy cunt or mouthing the same hot cock.
Marcy had instinctively speeded up her hand pumping of Kyle's hard shaft, and suddenly she felt it pulse strongly. Then her hand was filled with the torrent of his steaming semen. At almost the same moment, Karla bit down lightly on Marcy's clit, and the volcano erupted inside her, causing her whole body to vibrate in shuddering spasms.
"My turn, my turn!" Karla squealed, and Marcy's scream died in her throat as the other girl's cunt smothered her face. She licked furiously to bring Karla over the last lascivious edge. She was thrilled all over again when she felt Karla's shudder of climax, and then she was licking avidly at the spilled juice that accompanied it.
The three dozed briefly as they lay there, with the warm water lapping soothingly around them. But the Karlows weren't the type to rest for long. They were awake and ready to go again before Marcy was aware of having slept at all.
"Come on, Marcy," Kyle coaxed, straddling her and pressing his knees against the sides of her breasts. "Wake up, baby. Time for more fun and games."
Marcy yawned, and then opened her eyes in surprise as she felt Karla push her legs apart and insert a finger in her pussy to start arousing her again.
"Hey, don't you people ever sleep?" Marcy asked.
"There'll be plenty of time to sleep when we're dead," Kyle said, pushing his erect prick between the firm mounds of her breasts. "There'll be no fucking then."
"Very profound," Marcy said. "You mean, 'The grave's a fine and private place, but none, methinks, do there embrace'?"
"Yeah, that's the idea," Kyle said, "but why take so many words to say it? Don't waste that beautiful mouth of yours talking, when there's so many more fascinating things it could be doing."
"Such as what?"
"Well, for starters, how about blowing this for me?" Kyle said, crushing her breasts around his swollen organ.
Marcy sighed and closed her eyes. She felt as though she had fallen into the hands of two greedy children, who would gorge themselves to the point of illness on sex as other children might on candy. She wondered if Dr. Villiers was still watching from the observation station. Had he made these two the way they were, or had they just naturally grown up that way?
"Come on, Marcy, please. It hurts. It wants to be nursed," Kyle said, placing the rounded nub against her lips. "I'd use your boobs, but I long for that hot, sexy mouth of yours."
Marcy didn't want to. All she wanted to do was keep her eyes closed and ignore the rigid rod that was trying to get past her lips. But she couldn't, because greedy little girl fingers were busily storming the golden gates of her cunt, and sending increasing waves of excitement through her.
"Pretty, pretty pussy," Karla cooed as she applied herself enthusiastically to her task. "I'll pet the nice pussy, Kyle, and then Marcy will blow you like she should."
Marcy felt soft lips zero in on the highly excitable button of her clitoris. It was being stirred into life by gentle lickings, then pulled between deeply sucking lips that revived desire and caused her hips to squirm.
"She likes what you're doing," Kyle reported. "She likes it so much that she's going to let me fuck her in the mouth, aren't you, Marcy?"
He pushed the heavy shaft upward across her lips. She felt her mouth watering, but still refused to open her lips. It was so nice to lie perfectly still and let Karla serve her. It was just too much trouble to do what Kyle wanted.
"You're being selfish," Kyle pouted. "Marcy's being selfish, Karla. What shall we do about it?"
"Yummmm… yummmmm," was all Karla had to offer.
"We'll have to be mean to Marcy if she isn't nice to us," Kyle sulked, like the little boy he was. He raised himself onto his knees and struck Marcy on the face with his engorged cock. "Take that – and that, you bad girl! And that – and that – and that…"
Each word was accompanied by a fleshy thump as his hard weapon slapped stingingly against Marcy's cheeks and nose and mouth.
"Okay, okay, I'll do it!" Marcy gasped.
She opened her mouth and let him shove the rigid tool past her lips and teeth. The strong taste excited her, and she began to lick avidly.
Karla's tongue swirling in her quivering vitals added to her excitement, and she tried to swallow him to the roots, running her tongue eagerly up and down the slippery sides of his cock as she sucked it.
But that wasn't enough for Kyle. He took her by the ears and held her head still while he drove his prick deep down her throat.
Marcy felt as though he were going to shove right out the back of her head, or she would choke on the fullness of him. She had had a similar feeling when Dr. Villiers' larger, thicker organ had been thrust into her mouth the first time, but she hadn't cared then. She had felt that if she had to die, there was no better way than strangling on the fiery beauty of his phallus. But Kyle frightened her. Lying there pinned helplessly under him, and seeing the look in his eyes, Marcy was positive Kyle Karlow was more than capable of killing a woman that way if the notion occurred to him. It would simply be a new sex thrill, and he would have no more compunction about indulging himself with that than he did in anything else.
And Marcy didn't want to go down in the laboratory reports as the girl Kyle Karlow had choked to death with his cock. What would Dr. Villiers think of her? It would ruin his experiment. And how would it look in the scientific evaluation of his work?
No, she mustn't let such a thing happen! It was difficult to do with panic rising in her, but she forced herself to relax her throat muscles and let Kyle do just what he had said he wanted to do – fuck her mouth. With the cruel hands gripping her head, there was no problem about keeping it still. She just let her tongue sort of float along under the plunging prick, and kept just enough tension in her lips so they formed a willing tube for his tool to mush in and out of. The only force she exerted on him was the slight constriction of her throat as she swallowed.
She was so intent on giving Kyle the weird mouth fuck he wanted that she forgot Karla's expert ministrations, although her body didn't, it finally surprised her by unexpectedly convulsing. This brought a laugh of triumph from the other girl, and seemed to precipitate her brother's climax. After only a couple more vicious thrusts, the flood of his ejaculation poured down her throat in a hot river of cream, a torrent that she drank willingly and thankfully.
"Well done, X-999!" It was Dr. Villiers' voice.
Marcy opened her eyes and looked up around Kyle's genitals to see the larger ones of the anthropologist, bare, erect, and ready for action.
"Shall we go on to the next plateau of experimental action?" Dr. Villiers asked pleasantly. "Namely, what the kiddies so elegantly term a group-grope."
"Goodie, goodie, goodie!" Karla bubbled, clapping her hands. "There's nothing we like better than doing it by the numbers! Platoon right! Squad left! Company fuck!"
Marcy didn't know what a group-grope was, or what sex by the numbers might consist of, but lying there staring at the two sets of male equipment, she knew she wanted to learn.
"Now, let's see…" Dr. Villiers said thoughtfully. He looked very odd standing there perfectly naked, except for his horn rimmed glasses, which kept sliding down his nose. "There are four of us here, and… yes, I think we'll include Mrs. Swenson in on this part of the experiment. She's got a broad Swedish butt that should be a delight to bounce on, and we'll probably discover that under that starched, efficient exterior, she has the sex appetite of an elephant."
Karma and Kyle began to babble enthusiastically, but Marcy remained silent, staring first at Kyle's cock and then at Dr. Villiers' mammoth one. She wondered if there were any way she could get both of them into her mouth at once.