"Aaahhh, God," said Kay. "Jimmy! Jimmy, darling, it's so good, you're making me cum, yes, yes! Ooohhh!"
Grant watched his wife's lovely face contorting into a wild grimace of pleasure as orgasm rocked her body, making her heavy tits shudder shake. It was too much for him. He began to slam his cock mercilessly into Judy's tiny cunt, forcing out her cream in splattering jolts. He prayed he wasn't hurting her, but he just couldn't help it – he was cumming, like he'd never cum before in his life.
Judy felt her uncle's sizzling cum against her womb, and the hot bath brought her off. "Eeee, eee," she yelped, "yes, give it to me, Uncle Grant. Aaahhh!"
Jimmy wasn't far behind the rest of them. As he felt Kay's mature cunt squeezing and nipping and boiling around him, he blissfully shot his load into her, squirting her womb full of boy-cum. His hot juices triggered another squealing orgasm for Kay, who lost control completely and howled abandonedly.
While the twins lay panting and half-faint, Grant and Kay fell into each other's arms. Grant grinned at his flushed wife and said, "Sounds like it was a great fuck, baby."
"Oh, it was, it was," said Kay, burying her burning face against his shoulder. "Sounds like you made out pretty well, too, darling."
"You better believe it," said Grant. "Man, this little girl has a natural talent."
Knowing he meant her, Judy grinned proudly. It was a funny thing, but she wasn't jealous of Kay any more. She understood that Grant and Kay loved each other, and that she could never replace Kay in her uncle's affections, but it no longer bothered her. Grant had said she was good at fucking, and that was all she cared about. She didn't really want to compete with Kay. On the contrary, she wanted to make sure this marriage lasted, because if it didn't, she and Jimmy would lose a wonderful home. Thinking of this, she suddenly got an idea.
"I have to pee," she said. "Jimmy, please come with me."
"For Christ's sake," said Jimmy, "can't you even go to the john by yourself?"
Judy gave him a look, however, and he hurried out of the room after her. It had been a familiar look, and it meant that she wanted to tell him something in secret. Judy closed the bathroom door behind them and said, "Jimmy, did you get the impression, when we first came here, that Grant and Kay aren't getting along very well?"
"Yeah, I did," said Jimmy. "I'm kinda worried about it."
"Me too," said Judy. "It would ruin everything if they broke up. So we have to help them get back together."
"Sure," said Jimmy, "but how can we do that?"
"I have an idea," said Judy. She began to whisper to him.
Meanwhile, Grant and Kay were avoiding each other's eyes. Now that their horniness was appeased and the wild excitement was over, they were beginning to realize all the implications of what they'd done. After years of unsatisfactory sex, they had at last succumbed to the temptation of adultery. In seeking new partners, in so obviously enjoying the novelty of fucking someone else, it was as if they'd openly admitted that their marriage had failed. Neither of them wanted this, but what about the future? Would they go on being unfaithful to each other? Could they continue to love each other when they made love to someone else?
"Honey," Grant said at last, "I don't want you to misunderstand. I mean, just because I fucked Judy…"
"You don't have to explain, Grant," said Kay. She suddenly felt old and used up. "I know you find Judy more attractive than me. I know you're tired of me."
Grant was irritated by this remark. "You don't have to sound so Goddamned self-righteous," he said. "I have good reason for hurt feelings, too. I could see how much you dug doing it with Jimmy. I never turn you on like that any more. You're obviously tired of me, too."
They glared at each other as the twins returned to the room. Jimmy and Judy climbed onto the bed and exchanged mysterious smiles.
"Hey, Judy," said Jimmy, "let's have some more action. How about suckin' my cock?"
"Oh, wow, yes," said Judy. "That would be fun!"
Without paying the slightest attention to the two gawking adults, the twins began to play with each other. Judy straddled her brother's body, presenting him with her creamy pink slit, wiggling her little ass in naughty invitation. As she bent to lick his flaccid little prick, Jimmy seized her wriggling buttocks and drew them nearer to his freckled face. His pink tongue shot out and tickled swiftly through the pulpy folds of her labia until he located the tiny red button of her clit. He tongued it stiffly, and Judy squealed in delight.
"Ooo, yeah, Jimmy, eat me," she said. "I'll suck your peter, and we'll see who cums first."
"Well," said Grant, "I guess you and I are left out this time."
"Apparently," said Kay. "But, Grant, where did they learn all those things?"
"My dear," said Grant, giving her a feeble grin, "isn't it obvious? WE taught them."
Kay couldn't help giggling. She also couldn't help watching Judy and Jimmy. She was ashamed to admit it even to herself, but the scene was getting her very hot and horny. The young red-haired twins looked so cute together, so innocent, that she couldn't feel any repulsion for what they were doing. On the contrary, as she watched Jimmy's stiff pink tongue darting in and out of his sister's sweet little slit, as she imagined how great it must feel to Judy, she felt her own cunt beginning to weep its warm cream.
The effect on Grant was no less powerful. As he watched Judy's eager little mouth noisily sucking her brother's cock like it was candy, he imagined the pleasure Jimmy must be experiencing, and his balls began to tingle and stiffen with renewed horniness.
Judy was trying harder to remember the object of the game. She kept sneaking glances at her aunt and uncle to see if they were getting excited, but with Jimmy's stiff tongue poking deliciously in her ever-hungry little cunt, it was all she could do to keep her mind on her work. The hotter she got, the more furiously she sucked his tasty little dick, and before long she felt it growing hard as a rock on her tongue. She thought of how good it would feel to have that stiff little rod inside her, and she creamed violently all around Jimmy's tickling tongue. She heard him swallowing eagerly, felt him lapping up her cream as fast as he could. It was too much for her.
"Oh, Jimmy," she said, letting his stiff-standing little cock pop from her juicy mouth, "I just have to fuck. Do it to me now, please!"
"Right on," said Jimmy, licking her cream from his lip.
"Oh, my God, Grant," said Kay. "I don't know why this didn't occur to me before, but they're brother and sister. They can't fuck."
Grant turned pale. It hadn't occurred to him, either, that he and Kay were lounging on their bed enjoying a display of incest. "Hey, kids," he said nervously, "did you hear what Kay just said? I mean, maybe you ought to think about it."
Judy laughed. "We already thought about it, and we decided to hell with it. Jimmy and I fucked this afternoon."
"Oh, God," said Kay. "Is that true, Jimmy?"
"It sure is," Jimmy said proudly.
"Well, I guess the damage is done," said Grant. "We can't change what's already happened."
"But, Grant…" Kay was ready to carry on the argument, but she was interrupted by a shrill squeal from Judy. While the pretty teenager remained on her hands and knees, her brother had mounted her from behind and was now happily poking his rigidly stiff white prick into her creamy little cunt.
"Oh, yeah, do it, Jimmy," said Judy, wiggling her ass in invitation. "Fuck me, fuck me hard."
"Man, oh, man," said Jimmy, "are you tight."