Back at the house, mother and daughter had made their peace and were giving the poor sex-enslaved Rex the loving of his life. On the big round bed, the sleek furry animal was trying to position himself in order to imbed his fired-up penis far up inside the older woman's vagina. "That's the way he begins," Jan told her mother heatedly. "I-I think he's trying to fuck you, Mother."
"Ooooooh Jesus," her mother breathed passionately, also positioning herself in order to accommodate the handsome dog. "Reach up and guide his cock into me, darling. This is going to be terrific! Hurry!"
Jan did as she was told, reaching back to lovingly grasp Rex's thick hardness and aim it towards the pinkly waiting slit of her mother's soft, hair-fringed pussy folds. She cooed affectionately, slightly jealous, tenderly massaging his large animal cock.
Then, suddenly, his cone shaped hardness emerged like a red hot branding iron, glistening wet, and Rex began mounting the older woman from behind, working the slimly pointed organ up at her anxiously waiting rectal passage.
"Help him, Jan darling! Please! Help him get it in me!" Sarah begged feverishly, her upthrusted buttocks squirming obscenely backwards in search of his cock, struggling to fill her sizzling anal channel. Jan rubbed the swollen mounds of her top-heavy tits into the dog's gleaming fur and helped him position his haunches better in order to fuck her mother. Her slender hand guided the heavy rod of animal hardness pointedly toward the pink wetness of her love-inflamed pussy channel, wetting it more and then placing the tip of it right at the lips of her tightly clenched little asshole.
Then Rex's strong forelegs were gripping tightly around her naked waist and hips, the moistened tipped cock sliding effortlessly forward all the way into her hungrily absorbing rectal walls!
"Aaaaarrrrrggggggg…"
"Hold tight, darling!" Jan squealed excitedly. "He's going to fuck you now. It's going to be heavenly! That's it, Rex! Hump forward and fuck her good! Give my mama something to remember us by. Fuck her good, just the way you did me!"
"The way he did who?" asked Steve quietly, and then Jan whirled, gasping for breath. For in the guest room doorway stood gaping their two husbands – one of them, her father! Their eyes were wide and disbelieving at the lewd three-fold orgy they had been watching. For many moments they had been standing there absolutely speechless as if fastened in the earth. Steve felt at first as if his knees were going to buckle, but Arnold's strong hand supported him. His head swam in a gin-swamped haze, overwhelmed with shock.
"Well?" he could hear his father-in-law ask, "this is where we separate the men from the boys. What do you say?"
"But – you – you're not angry?" he asked his father-in-law groggily. "After all, human swapping was one thing, but this!"
"Hell no. Christ, this is the most erotic scene I've seen in a long time."
Arnold was right about that, Steve thought. Christ, his own prudish innocent blonde wife Jan, licking that dog's balls… She didn't even do that with him! And his own mother-in-law being fucked by it at the same time! Incredible! – But exciting!
But maybe he was wrong and Sarah and Arnold were right. Apparently his father-in-law didn't mind at all watching Sarah's asshole being fucked by that dog… "But Christ, Dad," he muttered, "a Goddamn dog…"
"Better than some cocksucker you hate fucking your wife, huh, sonny boy? Anyway, from the looks of things that dog could teach us a trick or two – and you and I are ready to use them! Look at the way he fucks into Sarah's ass… he knows what he's doing."
Jan had almost fainted as she saw the two men in the doorway. But now she hurried to cover her naked body with a sheet and bring her mother to her senses. In the ensuing commotion, Rex pulled his prick out of her anus and ran for the door. "Damn!" Sarah cried, spying on them, "couldn't you two bastards have timed it better! You just stopped me from getting one wonderful fucking from that beautiful beast!"
None of them could believe the unabashed sexuality of Sarah's outraged words as she worked herself into a sitting position to face them, her breasts pointing nakedly outward, making no effort at all to conceal her voluptuously exposed body. Steve ogled the cock-throbbing sight of her sitting there unblushingly with nothing on except her huge white tits, their large hardened nipples, and the saucy, brunette fringed triangle in her loins, the pink gash of her open pussy folds staring right back at him.
"Well," said Steve's long-haired mother-in-law saucily, her breasts shivering, "Is that all you're going to do, Stevie, just stand there staring? Aren't you going to be man enough to please your loving mother-in-law?"
At that Steve felt all rational thinking swiftly leave him. He did want to fuck his mother-in-law, and there would never be a better time for it than this one. What could Jan possibly protest, after she had admitted letting that dog fuck her, and he had seen her licking the dog's balls with his own eyes?
"Thata boy, son," said Arnold Talbott, slapping him on the back as he disrobed and his huge young cock swung outward, pointing straight at his mother-in-law, and then Steve crawled up between her widely spread legs and wormed his cock all the way up into her impatiently waiting cunt, as Sarah clawed at him and screamed a series of obscenities that had no beginning nor any ending.
And with that, Arnold Talbott was free to feast his eyes on his young daughter's nudely exposed loveliness. He ripped the sheet savagely from her naked body and jerked her towards him, fastening his mouth hungrily on her large, firm breasts. "Relax, honey," he told her as she tried to protest and fight him off, "you're going to learn to enjoy this."
And she did. Because before long, her cries of ecstasy as her father fucked her flat on her back were matching those of her mother as Steve fucked deeply and wildly into the voluptuous older woman. And then they were ready for a lengthy, mind-bending orgy in which everything went. They formed little quartets where Jan was sucking on her father's cock while being fucked in the ass by her own young husband, with her mother sucking on her tits or straddling Arnold with her cunt mashed wetly down into his face as he licked her cunt to orgasm. Or Sarah would be fucked backside and cuntside by the two men at the same time, with Rex leaping up onto the bed so that she could suck off the darling dog's again lust-hardened cock. Before very long both Jan and Steve had gone out of their minds with the sweet ecstasy of learning all the many different mouth-sex connections there could be in the world, and the strength of their marriage solidified, that night, through the comprehension that there were other ways of satisfying one's sexual and psychological needs beyond merely sleeping only with one's own spouse.
So that two weeks later, when Marge Levitt had returned from vacation and taken Rex back with her next door, it surprised neither of the men when Jan and Sarah demanded money of them in order to go out and buy the pups that Rex had sired down the block.
Because little dogs grew up very fast, and who knew that before very long the pitter-patter of tiny feet around the Winslow-Talbott household would become the thump and bounce of large, powerful German shepherds jumping onto big round beds and fucking the hell out of both women in the house. Because one good turn deserved another.
And a small suburban household had found its way to incestuous, animalistic swapping happiness… with mother and daughter marching into the bright sexual sunlight, their happy arms around each other's waists in an eternal bond of love and mutual admiration…