Building Bulk and Bulb

Story by Tristan Hawthorne on SoFurry

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#92 of Patreon Reward Vignettes

Murdoc/ FA: Pepsi was another who got his idea to me before I had to go on hiatus. This features his humanoid demon Bishop as a rubber beast.

Contains: Big Guys Dommed By Bigger Guys, Living Rubber, Human/Anthro (kinda), Big Muscles, M/M Missionary Position, Tail Growth, Anal Orgasm, Cell-Style Tail Vore, Moaning Detailed Bulges, Rubbing Cum Into Skin, Hollow Torso, Posing and Flexing, Rapid Digestion/Assimilation, Muscle and Cock Growth, Trait Theft from Vore, Canine Genitals and Condom Filling.

Bishop belongs to FA: Pepsi / Murdoc

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Each forceful lunge of Bishop's hips sent his lay's grapefruits rolling up against his own swollen knot. The latex demon bore down on the doberman lying beneath him, hilting repeatedly. He could feel the tapered point of the dog's shaft grinding into the deep crevices between his abs, adding lubrication to his pale blue surface with each gush of pre.

The muscular dog, while large himself, had been outclassed by his infernal lover. Pinned beneath the demon's prominent pectorals, he could just barely kiss and lick at the rutting rubber beast's throat if he tilted his head all the way back. He alternated this and burying his face into the valley between the latex pecs, his thighs spread open around the jackhammering hips.

With the motion of the rutting, the demon's tail undulated in a wave behind him. Suddenly, it seemed as though every sine curve of the sensuous fifth limb added to its length, making the taper from base to tip shallower with every added foot. Bishop could feel the panting against his chest and throat hitch and speed up. He grinned and curled his tail up over his back like a scorpion's, the tip pointing at the negative space between where his ram-like horns seamlessly curved from his brow.

Hilting and arching his back intensely, the beast growled with lust. At the same moment, the tip of his tail spread open, an orifice seamless on the rubber point of the limb spreading into a wide circle. The opening formed a bell-shape that stretched another foot and a half along the tail's length. There was hardly time to take in this detail, however, because that bell struck.

The dobie trembled on edge, before all went dark and hot and wet. Slick, clingy walls had wrapped over his head, while around his shoulders something open clamped shut down to his nipples. The edge of the bell contracted, and where it had been open before pulled away from his fur again, thrusting his corded neck into the tighter space beyond. The dog trembled, his girthy shaft twitching and starting to gush across his abs.

Bishop grinned toothily from ear to pointed ear, watching the face of his lay clearly moan in lust in a clear relief through the stretched trunk of his tail. The bell at the end expanded, reached down to the dog's elbows, clamped down and repeated its pull, starting to force the muscular canine's shoulders through into the hungry limb's 'throat'.

With the low light of the room glinting off his abyssal eyes and the polished surface of his rubbery body, the infernal beast pressed himself up onto his knees. At the same time, his tail yanked the dog off his cock, leaving the uncut member throbbing in the open air with only a taut condom for covering after so long having the heat of a musclepup's ass.

A weak moan escaped the bulge of the dobie's face, his shaft still spurting out into the air and onto his predator. The shots were silenced to the outside world by the next bell-lurch of the hungry tail, pinning his girth to his own cut abs. His legs twitched and went limp into a dangle as yet another undulation grabbed around his toned rump and shoved him deeper. Only the blissful look on his bulge and the needy rolling of his hips showed that he hadn't passed out.

Flexing the base of his tail harder, the demon inverted his meal. With gravity working for him rather than against, the tail made short work of the dog's quads to his knees. One of his hands carefully stroked over his wrapped shaft, careful not to let his pointed black nails nick the thin latex while the other rubbed the trails of white issue into his pale blue skin.

Soon, his body was just as glossy and unmarred as before his lay got off all over him, the only sign of the doberman at all being his muscular form descending through the tight tail. The dog's toes vanished with a snap of the belled tip of the organ, which, with one last undulating squeeze, returned to being an innocent tip of a tail. The writhing muscle-male bulge, however, continued to sink and slide down.

Bishop felt the pup's head pressing through the base of his tail, his cock giving a jolt in his grip at the sensation. As the detailed form vanished into the demon's torso, his chest and belly swelled, as if the muscles were wrapped over a barrel. He licked his lips with a moan, stroking along his chest and down his gut.

Muffledly, the dog within moaned as well, the shapes of his feet vanishing from the surface of the dangerous tail.

The demon grinned toothily, bringing his hands away from his body with a squirk of rubber on rubber, before flourishing his spread fingers into fists, and his arms into curls. He clenched down on his meal eagerly, sending his face to bulge one pectoral momentarily.

The defined shape softened and faded as a low gurgle filled the room. Gradually the barrel-shape of his torso faded, starting with his abs reasserting themselves as a flat cobblestone path between his mighty chest and throbbing loins. Another clench, and his powerful pecs slightly rotated inward, the crevice between them deepening as they swelled with rubber musculature. The swell of muscle travelled up his flexing arms, which kept the size from his tension as he relaxed them. He flexed again in a new pose, forcing his newly enhanced biceps to compete with his chest for space. On either side of his hands, his thighs swelled with power, followed by his calves where they lay upturned towards his ass.

Bishop settled said thicker set of glutes onto his own feet for a moment, relaxing again, before he tensed and thrust his hips into the air, slamming his fists down to his pelvis on either side of his groin. The last of the stretched appearance of his musculature faded as his cock swelled larger. The meaty rubber member changed shape beneath the snug condom, gaining a familiar tapered tip. Meanwhile, beneath the lip of the snug sleeve, his cock's base swelled out into a pulsing bulb, a potent knot growing out more and more, until it was nudging at both of his downward held thumbs.

Beneath, his balls swelled, gaining the rounder shape and heavier look of his prey's own, while the slick surface between them and his knot shifted and folded on itself, until there was a snug canid sheath held at bay by the breeding bulb. His newly enhanced nuts lurched, and his cock gushed. The condom's reservoir strained with the pressure, visibly tugging its edge up and away from the knot as each powerful pump inflated the already strained rubber further. He wrapped one hand snugly around his cock to keep it from sliding further, eyes closing as he rode out his peak.

He sighed happily as the flow ended, his thicker tail swaying and flicking behind him. With practiced ease, he slipped the condom off his rubber dog dick and tied it, somehow not once pricking the taut latex with his pointed infernal nails. Sliding off the bed gracefully, he strutted, glistening, back into the shadows whence he came.