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.
CHAPTER FIVE
Mrs. Swenson came hurrying at Dr. Villiers' call. Her white uniform rustled crisply as she came into the room, her huge breasts bouncing slightly from walking so fast.
"You called me, Dr. Villiers?" she asked, ignoring the fact that they were all nude.
"Yes, my dear Mrs. Swenson," Dr. Villiers said. "There are four of us here, which would be fine for a game of bridge, but the game we have in mind requires mother player."
"Well, I'm not much for games, Doctor," the woman said, backing up a step or two.
"Take off your clothes, Mrs. Swenson!" Villiers said, his voice quiet but commanding.
"Now Dr. Villiers, remember my professional…"
"Get out of that uniform at once! Or shall I have young Kyle here rip it off?"
Kyle took a step toward the big woman, his delight at the proposed violence obvious. Mrs. Swenson took another step backward, then reached up and began unbuttoning her white uniform. In a minute she was standing before them clad only in a white cotton bra, white underpants, and white stockings.