Tracy understood. "Don't worry, Bill," she whimpered. "If you come, don't worry about it. I'll fuck you again!"
Susan could no longer keep from looking. If they saw her peering around the door, that was too bad. She twisted from the wall and peeked, her hand still inside her panties. She saw her daughter leaning over now, her hands at Bill's shoulders, her exposed ass plunging up and down, her cunt stretching about his cock. From her position, she could see it all. The sight of her daughter's naked ass riding on Bill's cock gave Susan an almost overpowering urge to run to the bed and shove her face down between Bill's legs and lick at his sweet looking balls. She wanted to run her tongue up her daughter's cunt and lick that pretty ass. Instead, she plunged her finger into her cunt.
"You're so hard in me, Bill," Tracy grunted, pounding her cunt up and down on his cock. "Your cock is so hard and I love it in my cunt! Ooooh, I'm going to fuck you good, honey! I'm going to fuck your cock with my hot cunt and make you come! I'm going to make you feel real good. Bill!"
Bill ran his hands up his sister's thighs, clutching at her spreading asscheeks tightly, arching his cock up to meet her down thrusting cunt.
Tracy squealed in ecstasy as her distended clit scraped along her brother's cock. She whipped her ass about in a tight circle, moaning with passion.
Susan worked her middle finger vigorously into her cunt, her legs parted, knees bent slightly. Her eyes glowed with hunger as she watched her daughter's creamy ass flying up and down. She saw her son's balls, tight now, as he fucked in and out of his sister's cunt.
It was a beautiful thing to see, Susan thought. Her daughter and son fucking so eagerly, so wildly, with so much passion. It was surprising that she, their mother, had not once even considered fucking Bill. He was of the age she preferred, and, watching her daughter's rounded, tight, succulent pussy bouncing up and down on his cock now, she wondered how she had overlooked her own son in her search for hard cock.
Bill was holding his sister's grinding ass with tight hands, his cock thrusting deeply into her cunt as she came down on him. Both he and his sister were grunting loudly, gasping and choking as their orgasms raced to the surface. Tracy's face, so beautiful, was now contorted into a grimace of mindless ecstasy. Bill had squeezed his eyes tight, his mouth open as he rammed his cock up and down, fucking into his sister's cunt with energetic thrusts.
Susan, still plunging her finger into her soaking wet cunt, did hot need the scream of intense ecstasy that ripped from Tracy's mouth to tell her of the power of her daughter's orgasm. She could see the tightening of Tracy's pink asshole and the flexing of those pink cuntlips as tremors swept through Tracy's slender, exciting body.
Coming hard, Tracy slammed her cunt down onto her brother's cock, grinding her exposed ass in a frenzy, gulping and gasping as she came.
"Ooooh, shit!" Tracy screamed, her head thrown back as her ass twisted. "Shit, shit! I'm coming, Bill! Ohhh, fuck, I'm coming!"
Susan watched intently, her gaze blazing on her son's balls, anxious to see if he, too, would come – or even if he could come. If Bill could not squirt yet, she would be very disappointed. As much as Susan loved a hard cock, she wanted one that could erupt in that frothy, boiling spurt of come juice. Only once before Susan had sucked the cock of a teen who could not come. Although she had enjoyed it, as did the teen, it was his lack of ability to come that disappointed her. The taste of thick, creamy come juice was the ultimate for Susan. She liked to fuck a teen, but much preferred to suck him off and let him gush into her mouth.
If her son could not yet come, she would still love to have his hard cock in her mouth or even in her cunt. She knew it would excite her especially because Bill was her son. That alone would make her come, whether he could or not.
So, staring intently at his balls now pressed against his sister's ass his cock no longer in sight, Susan watched with a great deal of interest. She had her finger deep inside her cunt, no longer fucking herself with it.
And then Bill came!
She saw his balls starting to writhe, growing tighter yet. The only sound he made was a long, drawn out sigh, but his hands dug tighter into his sister's creamy ass.
"Ooooh, Bill, Bill!" Tracy squealed. "I feel you! I feel your cock squirting in my cunt! Ohhh, honey, give it to me!"
Tracy rolled her ass about in a tight circle, her cunt drawing at his spurting cock with waving, squeezing motions, sucking the jism from him.
Susan's cunt gripped her finger, then convulsed with a fiery orgasm, her knees almost buckling. She could no longer see her children, her eyes having clouded with the strength of her climaxing cunt on her finger. She choked back her scream of ecstasy, her hips jerking back and forth as she pressed hard at her throbbing clit.
When the orgasm receded and her emotions calmed down, Susan's vision returned. She found her son and daughter both looking at her. Tracy still sat on top of Bill, his cock still up her pussy, Bill and Tracy both saw their mother's hand inside her panties and the fire that still lingered in her eyes.
For a long moment, Susan couldn't move because her legs were too weak. Then with a sigh, she pulled her hand out of her panties and smoothed her skirt down. She didn't smile or say anything, just looked at them. Turning, she left her son and daughter.
CHAPTER THREE
"She watched us," Bill said, looking up at his sister. "She saw us fucking, Tracy."
"Don't worry about it, Bill," Tracy said, lifting her cunt from, his cock.
"She's gonna be mad," he said fearfully.
"Don't be sure," his sister replied, lying beside him. "You saw where her hand was, didn't you?"
Bill nodded, cuddling close to his sister. "Mother was playing with herself," Tracy said. "She watched us, but she wasn't mad. She wouldn't be playing with herself if she was mad, would she?"
"I don't know."
"I do," Tracy soothed her brother. "And I'm telling you, Bill, don't worry about it."
She felt his small body shivering and wrapped her arms around him. She caressed his back, sliding her hand into his pajamas and stroking the firmness of his tight ass. Holding one of his asscheeks in her hot palm, she whispered to him, "Bill, you can touch me, you know. You don't have to be afraid. Besides, I want you to touch me… all over."
"Really, Tracy?"
She nodded, grinning at him. "Really." Tentatively, as if expecting her to stop him, Bill cupped his sister's tit. He found it firm, yet soft. He gave her tit a light squeeze, making Tracy mewl in delight.
"You can put your hand inside, honey." Nervously, but eagerly, Bill slipped his hand into his sister's blouse and found her tit warm and naked. Her nipple was swollen and he twisted and pulled at it. Tracy opened her blouse for him, and Bill gazed with awe upon her creamy, flawlessly shaped tits, her nipples sugary pink and hard. He gulped with pleasure as he closed both hands around her tits, fondling them gently, but eagerly.
Tracy guided his mouth to one, brushing her nipple along his lips. "Suck it," she whispered. "Suck my titty, Bill. I like to have my nipples sucked."
"Really?"
"Oh, honey, stop saying that," she replied. "Yes, really it makes me red hot and tingly when my titties are sucked."
Bill probed his sister's nipple with his tongue, then swirled it around, finally taking it into his mouth. He gave a soft gurgle of delight and began to suck.
Tracy held her brother's head, holding his mouth tight against her tit, her nipple being licked by his tongue. She felt his cock pressing at her stomach, and shoved her hand into his pajamas again to fondle his ass. She pulled her hand between them, gripping his cock and feeling it swell into hardness once more. She gurgled with pleasure and stroked his cock tenderly. She fondled his balls, rolling them about in her hand.