"That's nice," she whispered, and wriggled her buttocks delightedly. "Not too hard!" she warned after a while as he squeezed with increasing excitement. She put her hands over his again and guided his fingers until he was kneading her small pointed nipples between his thumbs and fingers. He felt them stiffening under his unpracticed fingers, and he heard her breath coming quicker.
By now his cock was stiff and straining against his shorts. Unwilling to turn loose his delightful handfuls of young tit, he thrust his hips forward and squirmed, trying to adjust his painfully slanted cock. Sue Robin responded by wriggling her buttocks against him, seeking to groove his rod between her asscheeks.
He felt hot all over now. Letting go one tit, he reached down and pushed his shorts down below his hips, freeing his bent tool. As he did so, Sue Robin squirmed and got her panties down, too. For the first time in his adolescent life, Bobby Lee felt his throbbing cock rubbing between the silky thighs of a young girl. It felt good.
Sue Robin had never been shy, certainly not with her twin brother. Now she assumed command of the situation. Reaching back, she shoved her hand between them and seized his swollen cock.
"Oh, Buz!" she exclaimed. "It gets so big when you get hard."
"Yeah," he grunted, and waited to see what would happen next. Fondling her boobs seemed a natural thing to do while he waited, so he grasped them again and squeezed them gently while kneading the turgid nipples.
Although she lacked experience, Sue Robin had, by surreptitious reading, learned a lot about her body and its workings. Gleefully clutching the hot staff in her hand, she rubbed the head between her thighs, from her asshole to the top of her youthful bush of cunt hair.
"Ooooooooooh!" she squealed rapturously. "This is great, Buz!" She kicked her legs until she had worked her panties down and over her feet. Widening her thighs, she massaged her slit more freely, with the bulging knob of his cock, checking with his cockhead the little nub in the top of her cuntlips that she had tested and tickled with her finger as she lay back in her bathtub in recent months. This felt much better than her finger, she decided.
Soon a flow of juice from her cunt walls spread inside the lips, and moistened the cockhead which she continued to rub between the folds of her pussy and over the half-concealed clitoris. Sue Robin squirmed and squeaked with joy.
"Hey, Sis, aren't you going to put it in?" Bobby Lee finally demanded. All this felt good, but he had the urge to bury his shaft as far inside her hot ass as he could drive it.
"Slide under a little more," she gasped as she tried to guide the pole into her chute. "You're up too high."
Obediently he curled under a bit more, and felt the head jamming its way through what felt like a tight rubbery ring.
"Easy, Buz. Your dick is so big! You might hurt me. Go slow, honey."
Bobby Lee had never thought much about whether he had a big peter or not, but Sis' exclamation tickled his pride. Also, it dawned on him that there was a lot more to fucking than just ramming his stiff dong into a pussy, no matter what some of his buddies at school said. He got his hands over her tits again and massaged them as before, enjoying the sensation of Sue Robin squirming and jerking against him as he rolled her hard little nipples between his fingers. Slowly he pushed until his entire cockhead was through the inner lips of her eager young cunt.
"Ohhhhhhhh, Buuuuuuuuuuuuuuz!" she quavered through chattering teeth. "I feel like I'm gonna faint!"
Instead of fainting, however, she squirmed back against him in little movements that slid her tight cunt up and down on the barely enclosed cockhead, while squeaky little cries of joy kept bursting from her throat.
A novel feeling of power surged through Bobby Lee as he realized how much ecstasy he was transmitting to Sis, while his own throbbing delight kept increasing, too. Feeling the tight passage getting more slippery, he eased his rigid cock on in, forcing aside the virginal walls of her cunt. In a moment his belly was flat against the smooth curves of her buttocks.
"Jumpin' Jupiter!" Sue Robin exclaimed. "Buz, it feels like you're coming out my throat!" She reached down through her legs to feel the thick base of his buried tool, then pushed on under to clasp his balls and fondle them tenderly.
Bobby Lee's head was spinning with the variety of erotic sensations shooting throughout his body. He felt Sis' hand come up and cover one of his, moving it down off her tit to the top of her pussy.
"There!" she grunted. "Touch me them." She guided his finger through the silky hair of her mound to her clit, better exposed now by the thick pole wedging apart her cuntlips.
He found the little pea-sized stub and rubbed his fingertip across ft.
"Oh! Oh! Oh!" she cried, her body convulsing and writhing as much as the confines of the large sleeping bag would allow.
The candlelight flickered against the ancient walls of the room as the twins gradually found an unaccustomed rhythm, Bobby Lee surging slowly into the firmly cushioned buttocks curved against him, and Sue Robin backing into his drives with joyful vigor. It seemed to him that his cock was growing ever longer and ever thicker as the soft lips gripped it and slid up and down the shaft. Jerking off had never given him such a thrill. It was too much.
"I'm coming, Sis!" he exclaimed as he felt the familiar stirring in his balls. "I'm coming!" He took his hand away from her pussy and clamped it again on her free tit, dragging on them to give him more leverage as he drove harder and faster and deeper into her.
"Me – me – tooooooooo!" she gasped, breaking the steady rhythm of her hips and jerking spasmodically. "Oh! Ah! Ahhhhhhhh!" A wail of exquisite agony ripped through her taut throat, and then she was laughing and sobbing at the same time while her body went limp. Her bathtub masturbation had never given her such a shattering climax.
They lay gasping and panting for several long moments, half-dazed by the passionate storm that had shaken them. Bobby Lee didn't try to pull his still-erect cock out of the hot snug clasp of Sue Robin's pussy, but his hands on her tits relaxed and he began to drift off to sleep. He was brought back to consciousness by his sister's whisper.
"Buz, do you hear somebody?"
He listened. A faint wind outside rapped a branch of a low-boughed tree against the roof near where they had crawled into the house, but that sound he recognized. He heard nothing else.
"No, Sis. I don't hear anything."
Maybe it's my imagination, she thought, straining her ears. Gradually it came to her that she hadn't really heard anything so much as she had felt something, a presence of someone or something that was watching them. But strangely, it wasn't a frightening feeling. In fact, she sensed something protective about the presence.
She also felt Buz's body relaxing in sleep, and she smiled. Lordy, that had felt good. So that was what real fucking was all about. Her sensitive pussy squeezed involuntarily on the softening peter still wedged inside her, and a renewed thrill shot through her loins. Maybe they'd wake up and do it again before the Alligators came for them in the morning.
These memories paraded swiftly through Sue Robin's mind as she stood facing the Old Place and the river beyond. Smiling, she turned and went on into the house.
Aunt Minerva sat in the western bay window of the huge living room, knitting away on some piece of clothing. She had watched her beautiful, long-legged grandniece coming away from Clarinda's cottage, and she knew what was going on.
"Hi, Auntie," Sue Robin greeted the little gnome-like woman. "You making something pretty for me?"
"Maybe for you, maybe for somebody else," the old lady replied tartly.
Sue Robin smiled, as unfazed by her great aunt's abruptness as by Aunt Clarinda's huffy tone. She went over, bent and kissed the gray-haired woman, then plumped down at her feet, sitting crosslegged on the polished pine floor.