"Oh fuuuu... Oh Fuuu-ck!!". Gina grunted frantically through gritted teeth as Ramon pumped into her. She could feel the soft dewy moss underneath her back as her lover thrust his weight into her like a jackhammer. Folded over as she was, with her legs resting on his shoulders, she could barely get enough air into her to keep up. Panting and squeaking her ample bosom, squashed against her stomach jiggled with every rapid thrust.
Jolts of electric excitement periodically fired from her eight erect nipples, both new and old, and ground themselves deep within her in a rising ecstasy. her hands alternated between flying out to steady herself in the soft ground, and to tweaking whatever nipple she could first get her hands on. "AHN... NNGHH" she writhed as a particularly thorough twist sent her hips grinding in sympathy, a squelch of her juices running down her ass crack and cooling to the gentle forest air.
The slaps of Ramon's heavy sack we're sounding wetter and wetter as her juices flowed liberally from Gina's pussy' it felt good to be ploughed so thoroughly. "R--Rough-er!" Gina gasped between pants, to which Ramon steadied himself and snaked his hand behind her hair, grabbing a fistful and tightly pulling her head back. It was the straw that broke the camel's back, sending Gina in to a mind-wiping orgasm as she began to violently shake and turn red.
Against the lack of air, her cramped position, and constant motion, Gina face was slowly turning red as blood rushed to her head. Stars were erupting, in post pleasure and from lack of air, it didn't stop her from tweaking her rows of nipples, but she did begin feebly stuttering,
"C-cu-um-m!", As soon as Ramon registered the word he know what his partner wanted. With a squelch he removed himself from her and drew back; Gina's legs thudded to the floor and with a might gasp she gulped fresh air. She panted two more needy lungfuls as Ramon shuffled forward straddling Gina. She felt his enormous dangling ballsack heavily dragging up her chest as he did so, rising and falling as he slid wetly over every nipple.
Now with enough air, to regain her motor control, Gina propped herself up and hungrily opened her red ruby lips, mouth wide. A few more thrusts from Ramon sent him spiralling over the edge too. Gina watched , and felt, Ramon's sack tightening and closed her eyes against the salty hosing that was coming. She flinched as the first landed to the side of her mouth, dousing her cheek and filling her nose with the stench of cum. More ready for the remaining shots she kept her eyes screwed shut and revelled in the feeling of the quickly cooling, warm sticky ropes splattering across her face.
Only meters away, in the bushes, another couple was cumming in sympathy. Tom Tom, having followed his daughter down their stream to the nearby forest pond, had been watching Gina and Ramon from the moment they had laid down in the moss outside their tent.
Tom Tom, still under the influence of Lisa's Chronivac settings for infinite cum production, constant erection, hair-trigger and instant recharge, had wasted no time stroking himself, and cumming a sizeable steaming puddle into the ground at his feet. It hadn't taken too long then, for the smell of his cum to get his daughter going. Giant, Labrador sized that the first generation were, she was well capable of taking her great Dane sized father.
Squeaking, the black and grey rat turned before him, paws splashing in the puddle of her sire's cum, and presented herself, rat pussy swollen in constant heat. Incest was not an issue for the Tom-Tom clan as Lisa had purged any genetic weaknesses from her bloodline in her greedy play for rathood. And with Lisa's happiness to become the indolent, ever birthing brood-queen she actively encouraged Tom-Tom to sate himself off their own brood when she was too tired or close to birthing.
Wasting no time, Tom-Tom slid into the waiting rat-snatch of his daughter and began pumping and cumming into her fertile womb. She squeaked and swelled underneath him, quickly overflowing with cum as her pussy dribbled to add to the puddle under her.
Tom-Tom watched the two humans carefully as they mated, noting with interest the rows of teats on the woman's chest, and the heavy ballsack on the male. The rows looked identical to how his Lisa's had when she began to turn.
Tom-Tom knew these humans were turning too, the way that his mate had. It was something he was excited to report to his queen. He wondered though, how the changes were coming about, so he continued watching them, long after his rat daughter, full to the brim and certainly pregnant with his brood, slid wetly from him and rolled to the side, panting.
It came to him as his eyes followed a trickle from his puddle of cum slid into a stream feeding the lake. Following the stream to the lake he watched as the gasping female, now finished and covered in cum shuffled on all fours to the water, drank heavily and then slid naked into the water for a swim.
Tom-Tom's brood had been cleaning their cum soiled bedding into the streams and waterways leading to the small lake for months, it was filled with his cum and the cum of most of his sons, grandsons and greatgrandsons. Turning, Tom-Tom headed back to his den with new knowledge to inform his broodmate.
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Back in the water, Gina surfaced, long brown hair clinging to her head and shoulders, skin and pussy still tingling from her time with Ramon. There was something about this place that always filled her with lust and sexual energy, every time they camped here she found herself enjoying the sexual experience more and more. It was also where she had first noticed her new nipples, nipples she'd grown to love, as medically baffling as they were. All eight stood to rock, hard attention in the cold mountain run-off and she ran an loving hand over them, feeling their hardness slide successively across her hand. She also noted that her skin was soft and pliable around them. She wondered if it was from all the tweaking and playing, but they certainly looked more swollen now than a few days ago. The medical side of her instantly began to worry, it was another unexplainable thing that would send any doctor running for help; another part of her though, the part that had grown in the weeks since she met Ramon and had begun camping, thought how exciting and cool it would be if she had more breasts to show off, how much more fun the sex would be with more things to play with. Tingling and grinning at the thought, Gina's hand slid between her legs under water, and gently she began playing with her erect clit.