Kyle fondled his sister's exposed breast, and then leaned over to suck it briefly, pulling the oversized nipple into a long coral point.
"It excites you to see me do that, doesn't it, Marcy?" he asked. "Nearly everyone gets an extra charge out of seeing Karla and me handle each other. Just knowing we're brother and sister somehow adds to the thrill. I guess you could say they enjoy our incest vicariously."
Again Marcy was amazed at the impact words could have on her. She could feel the sudden increase in wetness around the fingers Kyle was teasing her with, as a shiver of undiluted lust went through her. Incest! Wasn't that what she had been thinking about before Dirk Villiers had ruptured her maidenhead?
"You wouldn't believe some of the things we do," Kyle said, unhooking her garter belt and tossing it aside. His lips followed closely behind his hands, as he slowly rolled the black net stockings down her thighs, planting moist kisses on one leg and then the other, and leaving hot spots to sear her flesh like brands.
Karla's mouth pulled one of the lipstick-smeared nipples, sucking it hard while crushing her bared breast into Marcy's other aching mound. The erotic sensation of breast pressed to breast was incredible.
Marcy's breath was coming fast. She had never even imagined being made love to by two persons at once, and the waves of passion radiating out from her throbbing nipples broke continuously through her whole body. Her thighs ached with a hunger she could no longer make a pretense of denying.
"Beautiful sexy Marcy," Kyle was crooning as he drew the ridiculous zippered panties down and off, and then opened the lushly forested slit between her legs. "Look, Karla, look! Isn't that gorgeous? Did you ever see a pussy so lusciously eatable?"
"Never," his sister said, crouching beside him to press her mouth into the silky fuzz that covered Marcy's mound, parting the hair with her tongue and licking the inflamed cunt lips. "Delicious!"
"Oh God!" Marcy moaned, and thrust against the girl's mouth in wanton invitation.
"That's it! Open up that spicy cunt and let her taste the sweetness!" Kyle urged, planting kisses all over Marcy's belly and flanks, before lowering his head and watching his sister lap at the pink slit.
"That's enough," he said. "Don't make her cum! Keep her panting for a while. Let's get her into the tub."
"Right on!" Karla said, and got to her feet. Between them they lifted Marcy and guided her toward the bathroom.
"In here," Kyle said, pushing open a door. "Welcome to our watery paradise!"
Marcy blinked and looked around. The bathroom was anything but little. It was almost as large as the living room in an ordinary apartment. The walls were hung with copies of erotic murals, which depicted all kinds of sexual acts being indulged in by a remarkable assortment of men, women, children, and animals.
"Our inspiration," Kyle grinned, as he saw Marcy's eyes grow round, "although I must admit that generally we don't need any."
"Here's the Roman tub I told you about," Karla said, urging Marcy toward the center of the room. "How do you like it?"
To Marcy it looked more like a small swimming pool than a bathtub, and the divans and piles of cushions around its edge added to the air of luxury. The slanting sides of the bath were padded and covered with waterproof material as soft and sleek as satin, and the water was warm and scented.
Karla turned Marcy so that she was facing her, took her in her arms, and kissed her passionately. Marcy moaned as she felt the prodding of the girl's nipples against hers, and the hot insistence of Karla's sex pushing into the pulsing pink lips of her own cunt.
"Get undressed, darling, so we can begin," Kyle said to his sister, casting aside his headband, loincloth, and slave collar. Karla released Marcy, and went to stand beside her brother while she undid the clasp at her shoulder. She let the flowing gown drift down her body and settle around her feet.
The pair clasped hands and faced Marcy, proud of their naked bodies and supremely confident of her approval.
"Do you like us?" Karla asked, and Marcy could only nod. The dizziness caused by the scented warmth and the lust they aroused in her caused her to sway.
"Are you ready to fuck us?" Kyle asked.
Marcy's knees turned rubbery at the incredible eroticism of the brother and sister inviting her to share their incestuous passion.
"Will you join us now in blissful carnality?" Karla whispered, coming closer.
"No, not yet," Marcy said, surprising them and herself. "First I want to see you two together. I want to see the brother fuck his sister – no, I want to see the sister fuck her brother! You get on top, Karla. I want to see you capture Kyle's hot cock in your dripping cunt. I want to see you impaled on your brother's prick." The words poured out in a rush before she could lose her nerve.
Karla clapped her hands in delight. "Oh, what a lovely idea! We just love to put on sex shows for our friends! Lie down on that mattress right there in front of Marcy, Kyle, and let me rape you."
Kyle stretched out with his rigid cock aimed at the ceiling, and as his sister moved to mount him, he caressed her breasts and nibbled at her neck and ears. "Okay, Sis, rape away. I hope Marcy enjoys it as much as we will."
Karla was poised over her brother, letting the pink folds of her outer cunt lips barely touch his eager cock. He groaned and squeezed her breasts while she rubbed her nectared pussy back and forth over the highly sensitive cockhead, and shivered in lustful anticipation.
"They're brother and sister," Marcy was muttering to herself. "Sister and brother, and they're about to fuck each other. If they can do it, why can't Jimmy and I?"
Hardly aware of what she was doing, she got down on her hands and knees and crawled between their outstretched legs so that her face was almost touching Karla's round bottom. From there she could see the pouting pink cunt lips open under the pressure of the pulsing cock, and the musky odor of their arousal surrounded her.
Marcy watched, entranced, as the rosy folds slowly engulfed the tapering cockhead, and then the long length of thick pole. When Karla's lips met Kyle's in an openmouthed kiss, and they started the full, deep, fucking movements, Marcy's hand sought her overflowing cunt, and her fingers worked frantically in and out in a matching rhythm.
CHAPTER FOUR
"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.