Saiyan Sexperiments

Before long, Bulma returned to room, followed by a motorized trolley for moving Vageta without needing to release him from his bonds. He'd been fairly docile so far, but Bulma didn't want him to be tempted into chickening out when he saw what the next phase of his training would entail.

Approaching the table her husband was fastened to, she noticed that although his cock was semi-flaccid, it was still dribbling a small but constant stream of precum. Ah, she had forgotten about the adjustment she had made to his prostate to increase its semen production when stimulated, as it most certainly was now by the ribbed pole of rubber lodged up his ass.

Vageta was still enjoying a post-orgasmic stupor, but was quickly brought out of it when his wife began pulling at the giant dong inside him. His muscles already stretched well beyond the point of being able to either assist or impede her attempts to dislodge the phallic invader, he could only groan as it was pulled slowly and steadily from his anus, the puffy red lips of his ass distending slightly as they clung tightly to the dildo's surface.

The rubber cock finally popped free with a wet slurping sound along with a generous amount of clear viscous fluid, leaving Vageta's sphincter muscle completely completely slack and gaping open to the point that Bulma could have inserted her hand without touching the sides of it.

Mesmerized by the sight of her husband's sloppy abused hole, but aware that time was of the essence if he was to be prepared for his role as Shenron's cum container, Bulma used the trolley's remote to activate it's mechanical arms and engage them with the table's detachable restraints, lifting Vageta into the air while keeping him on his back.

With the machine following her, Bulma walked purposefully out of the room and down the hall to her adjacent private laboratory. Entering the warehouse-sized building, it's large floor space filled with an array of machines and devices in various stages of completion, she and the trolley wove their way between the curious metal constructs, until they reached the rear section of the lab where Bulma had recently begun experimenting with bio-genetics.

Feeling the machine carrying him come to a stop, Vageta craned his neck as far as his restraints allowed him to in the hopes of getting a clue of what his deviant wife had prepared for him, but he was confused when all he was able to see from his impaired line of sight was the top of a giant capped glass beaker, easily large enough for a person to slip into. His attention was drawn away from from the vaguely ominous bottle as Bulma spoke to him.

"Alright Sweetheart, this is where you're going to be spending the next six days getting ready for your date with Shenron." As she spoke, she was fiddling with the controls on her remote, causing Vageta to be carried up and forward by the trolley's arms, closer to the top of the flask. Once again the detachable restraints were transferred, this time to a machine stationed directly above the covered rim of the beaker. The magnetic arms were oriented such that Vageta's own arms were forced to bend down at the elbow, and his legs were drawn upwards so that his knees were higher than his elbows and he was almost performing the splits in mid-air. This contorted position, which would be painfully awkward for a normal human, was not even mildly uncomfortable for Vageta, who now possessed an impossibly bendable physique in addition to the extensive flexibility training he had undergone his entire life. It did however, cause his ass and still its gaping hole to jut out obscenely beneath him, almost touching the top of the container. Closer to the glass, Vageta could now make out a distinct buzzing hum coming from the transparent enclosure, and his sense of unease spiked. However, knowing any attempts to struggle would be only serve to annoy his wife, and that while she delighted in tormenting him, she would never willingly allow him to come to real harm, he simply took several deeps breathes and tried to look as stoic as he could with a bright rubber ball stuck in his drooling mouth.

"To train you to take Shenron's dick, I thought the best things to practice with would be with real cocks, but unfortunately there are very few animals in the world that are endowed enough to serve our purpose, and those are so large that rigging up a means of letting them fuck you would be annoying. So, I simply created my own."

Inside the giant jar was a den of chimeras, organisms Bulma had created by splicing mammalian and insect DNA, along with liberal enhancements to their hormone production. Like many species of insects, the beasts could identify potential mates by the pheromones they produced, and Bulma had of course made the scent of a male saiyan irresistible to them. Though somewhat unsettling to look at, with appearances resembling oversized wasps, the chimeras were completely harmless, lacking mandibles, stingers, claws, or any other means of assaulting Vageta, other than with the enormous sets of genitals that were retracted inside their bodies.

With the push of a button, the barrier between Vageta and his wife's creations slid to the side, and the four chimeras in the tank quickly left their subterranean burrows at the jar's base as they picked of a scent they interpreted as a particularly fertile female. Spying the exposed hindquarters of their prey, a short scuffle ensued as the monsters fought over who would be the first to impregnate their potential mate. Lacking any body parts that could be used to harm each other, the beasts showed an uncanny level of sophistication as they engaged in a short competition that looked very much like rock-paper-scissors. Two rounds later, the proud winner beat his wings in triumph. As his sullen competitors slouched back to their tunnels to wait their turn, he rose rose into the air and floated slowly upwards to claim his alluring prize.

Reaching Vageta's bound body, the eager chimera wrapped its six segmented arms around him in a gentle but firm embrace, not wanting to hurt its mate, but neither wanting her to slip away. Once securely seated, the beast relaxed its abdomen, allowing its truly astounding penis to slip out of it sheath. The rapidly hardening flesh shifted from peach pink to a deep red as it was suffused with blood, while the rest of the chimera's body grew several shades lighter as vast amounts of the vital fluid were drawn southward. The crimson phallus neared three feet in length and a foot across when fully engorged, and over the next six days it would continue to grow at a rapid rate, forcing Vageta's ass to expand to greater and greater dimensions until he hopefully would reach the point where he was ready to for his divinely-appointed task. Working in turns, the chimeras would keep him constantly occupied, allowing him to train without rest and make the most of the limited time that had been granted to him. All the nourishment he required would come from the vitamin-rich semen that would be dumped inside and absorbed by his intestinal tract, and as a saiyan he could go for nearly a month before needing to sleep.

The chimera, unnaturally sophisticated creature though it was, had no knowledge nor interest in the concept of foreplay, and as soon as its dick was in position, it attacked the wet hole before it ferociously, pushing over half it length inside the prince on the initial thrust, then continuing to piston in and out of him, its entire body swinging backward and forward as it established a rapid rhythm, and each time penetrating a little deeper as Vageta's bowels rearranged themselves to accommodate the bumpy intruder. Too tightly held in place to ride in sync with the pounding, his body shuddered at the apex of each stroke, not with pain but pleasure. Humiliating and brutal though it was, the glorious sensation of fullness was beyond anything he had ever felt before. He could feel his flesh stretch and contract like a balloon each time the chimera's cock delved into his body, and every time he had to fight back the orgasm that threatened to overwhelm him. As tempting as it was to simply let himself go and embrace the perversions his wife was forcing on him, his stubborn pride, bolstered by his innate competitiveness, demanded that he outlast the creature. With this in mind, he turned what attention hi could towards maximizing the chimera's pleasure, clenching his anal muscles in a pulsing manner and doing his best to milk the dick inside him as quickly as possible. The technique wasn't as effective as it normally was due to how stretched out his lower muscles already were, but it still proved sufficient to drive his mutated partner over the edge. The chimera's thrusts grew shorter and more frantic, and as Vageta felt warm liquid shooting into his intestines he gave into his own body's demands, and he sobbed with relief as his cum fountained out of his untouched dick.

From an adjacent room, Bulma watched the spectacle intently, one hand between her legs as the other worked the controls for the multiple video cameras she had recording the event. Though she had other obligations that would keep her from being able to watch the full spectacle of her dear husband's conversion into a living cumbag, she intended to catch every second of it on camera. Maybe she'd give highlight reels out as presents next Christmas. Pulling her fingers out from under her skirt, she quickly licked them clean before standing and walking to the lab's exit.