"All right, Mike, anything for you." She tried to keep the sudden joy and hope from her voice. Now maybe she could get a look at him, without asking!
"Okay, give me a kiss first though, eh, Sis!?" When she eagerly surged up against him, though, he laughed and reminded her of the lipstick, which she'd better get off anyway, before Mom or the Old Man came home. He pointed her toward a box of Kleenex and watched with mounting excitement as her smooth round globes, small and tight as grapefruit and rosy from their pressure against his knee, bobbled away above her white stockings.
While she licked her lips and rubbed impatiently at them with tissues – he remembering to dispose of their guilty clues before the day was over – Mike leaned back on one elbow and unfastened the waistband of his black Levi's, partly unzipping his fly. He'd long since given up wearing underpants, for the sake of believed masculinity, though Lois would have tried to shame him into wearing them if she'd known about his breach and so, when he pulled up his T-shirt, his black-haired, exercise-hard flat stomach was bare to Maryon's eyes as, lips now red with increased circulation rather than cosmetics, she came back, shy and awkward as a month-old filly, to her brother.
Mike's prick had gotten hard… hard as a hammer handle… when he'd been playing with his naked sister, but he'd subsided from that so that his male member lay flaccid and placid along his thigh beneath his tight pants. He hadn't yet recovered his calm and coolness, and was wary, unsure, of going too far. At this time. For now, he intended to keep himself covered and secure.
Maryon was hopefully intent on exploring him, and came over to him as he sat up on the side of the bed, as before, with a charming mixture of boldness and blushes mantling her face and brightening her blue eyes. He patted his knee and she sat herself astride his thigh, tingling again as he, in pulling her closer, unthinkingly brushed the material of his pants in thrilling friction against the lower lips of her cunt. Now she could think/say the word without hesitation, though she was determined in her own mind never to use it except privately to Mike.
The straining fifteen-year-old held the slight nude figure of his sister against him and lowered his head to kiss her firmly on the lips, full, red, and soft against his, feeling her whole body press warmly up against him. Running his hands up and down the valley of her spine, he let himself fall slowly back, so that she lay on top of him with his strong thigh firmly clutched between her own two slender, creamy, girlish lengths, lips still locked to lips, her hair tumbling down about his cheeks and ears. Gently he rolled her off and pushed her up, resting his head on his pillow, his buttocks jacked up on the heap caused by the roll of the unmade bedclothes. He took her hand, winked at her questioning wide blue eyes, and laid her palm down on his warm belly.
Her fingers were cold, perhaps from nervous excitement, but they soon warmed as she began to rub them over his skin as he'd done for her. She concentrated on the job, looking back once at him to seek confirmation she was satisfying him, and he nodded, and embraced her trim little body, slowly caressing her firm ass, his mind lazily filled with thoughts of harem girls who'd perform for him without needing more than a casual touch from himself. He felt his erection growing and shifted his leg the better to accommodate it.
Maryon bent to her task with enthusiasm, slyly creeping her busy little fingers downward to poke their tips into the curly black hair of her brother and beneath the tight edge of his crotch, hoping to get a look at his mystery. Just below her eyes she could see a larger lump of flesh she'd not noticed on him before, packed solid beneath the thin stuff of his black pants. She knew it to be flesh, now, though at first she'd thought it to be something in his pocket until, touching it, it quivered like something alive. Behind her she felt the loving touch of his hands on her ass – and twitched it to encourage him, not being disappointed as presently she felt his finger play down between its halves, pass lightly over her hole there, and slide into the lips of her front hole… her cunt. Greatly daring, she pushed her hands down under the top of his pants and for the first time felt the hard rod of flesh whose roots grew there.
Mike took hold of his sister's left leg and, bending it at the knee, lifted it across his body so that she straddled him, the position pulling open the naked, pink lips of her little cunt. This close, and with his thumbs parting her, he could see clearly now the hard nodes he'd felt before at the top of the slit. That must be her clitoris, he figured, and noticed her twitches each time he brushed his fingernail across there, and the way she hitched her butt up in the air. There was no sound anywhere to be heard, except that there was an odd kind of ringing in his ears, and the pulsations of his heart. Maryon's fingers were beginning to loop around the thick root of his sex and he decided what-the-hell and, letting her cunt alone for a moment, slid his hands beneath him, raised his own butt, and eased his pants down a couple of inches. His sister seemed to pick up on this unspoken offering and with both hands, she reached into his crotch and along his leg and tugged his rigid dick free. As soon as it was clear, she stopped. He began to run his hand up and down her back, bringing the other to stroke her bent left thigh. "What's the matter, Sis?"
"You… You're… its so big!" she said. "Your thing, Mike. I don't have… why don't I have…?" Her voice trailed off, and he felt her golden, silky hair touch him as she leaned closer.
"That's… that's my dolly, Sis," he grinned. "You get to play with your little dollies… men have their own, see. Now… what d'you call it?"
"This?" she said, squeezing it with both hands. "Your, your thing?"
"Another coupla words for you," he said. "It's called a prick… or a cock."
"A cock!?" she exclaimed. "But a cock's a… a daddy chicken, isn't it?"
"Yeah… but it's also the grown-up name for that."
"Do you mind if I play with your… your dolly, your cock?"
"Go ahead, Sis, but don't be too rough, and stop when I tell you." He lay back and continued to fondle her, trying to stare up into the little pink slit so freely and innocently presented to him.
Maryon was delighted. She knew this was all wrong, somehow, but at the same time she felt she was being let into many grown-up secrets… an honor vouchsafed by her good big brother; and she was grateful. She was sure, certain sure, that Mom and Dad wouldn't approve… this would get both Mike and herself into trouble. But it was better than being punished. And it was fun, playing with this curious length of red and white flesh, with its strange ways. She felt how it throbbed against her palms, and – wow! – look at that funny skin at its end pull back! Nothing like that happened to her. Mike was such a good brother. Full of warm and happy feelings, she pressed the hot, funny-looking thing against her cheek, her soft, curly hair coiling down around it, mixing with his black, shiny, tight curls.
"What's this do, Mike?" she asked, cupping four slim fingers under the loose bags of skin nested between his thighs.
"Balls," he said, his voice muffled as he pressed his head up between her own rounded thighs.
"Oh, I see why now," she said, discovering that within the bags of skin were a pair of hard round things… like peach-pits.
"Careful, Sis," he muttered, as she squeezed them and, in a kind of admonition, blew onto the upraised ridges of flesh and into her slot.
"Oooooohhhhhh, that tickles. But it's nice," she said, wriggling her whole body. "How about you?" And bending her head she peeled back his foreskin and breathed warm sweet air about his quivering tip.
"Mmmmmmhhhhhmmmmhhhh!" he hummed by way of reply, feeling ready to spurt.