Greg, an imposing grizzly bear, sauntered out of his suburban home with a big smile on his face. Ever since a strange dream of being abducted by aliens, he had finally mastered the use of a magical power he had discovered. Any living thing that touched his cum would turn, body and mind, into a living onahole for his personal use. It was finally time to satisfy his long impossible dream of having a cub to fuck.

He made his way over to the local park where preschool furs often played. It was a nice neighborhood, so many of the little furs here went unsupervised. Greg had come here many times in the past to secretly masturbate, but that was all he ever dared. After all, even though he was not the biggest fur he had ever seen, his thick, pointed bear cock was more than big enough to eviscerate a young cub. At least, under normal circumstances. 

Instead of his usual spot – a shady knoll under a tree where he could watch the playground area without being observed – he staked out the closest bathroom. He waited until a young cub passed by alone. A sweet little chipmunk, plump and chestnut-colored, no more than three or four. The little rodent toddled into the bathroom with quick but unskillful steps, and Greg waited with his heart pounding in his ears and his shaft throbbing furiously. He couldn’t help reaching down to stroke it as he waited for the chipmunk to emerge.

When finally that cute, fluffy body emerged from the bathroom, Greg’s hands snapped out and covered the cub’s entire muzzle. Any attempts to scream, or even breathe, were impossible. He quickly ducked underneath a large laurel bush, the interior of which could not be seen from the outside. Without bothering to make sure the cub was all right being deprived of oxygen as he did so, he heedlessly tore off the boy’s shorts and pressed his dripping tip directly against the tiny pucker.

Of course it wouldn’t go in, but that wasn’t his goal right now anyway. He just didn’t want to miss. Panting heavily, he let the cub’s scant weight rest on the tip of his cock, even as the poor boy began thrashing for air. Greg was so turned on, he barely even noticed. He groaned as he grasped his cock, pumping vigorously up and down, even as the fluffy little body in his arms began twitching in need of air.

Soon enough, the cub went entirely limp. Greg fortunately had the presence of mind to remove his paw from over his muzzle, letting him breathe while he was unconscious. In the meantime, he wrapped an arm around his fluffy, chubby little tummy and yanked himself off until his vision went blurry from excitement.

He was so turned on that he lasted barely more than a few moments after that. “Ugh…ngh!” he grunted as he began to shoot cum directly into the choked-out cub’s virgin little hole. 

Lewd splurging sounds emerged from the place they were just barely connected. Cum filled and grumbled inside the cub’s small tummy, and the amount that wouldn’t fit inside spilled out onto the forest floor by Greg’s feet. He growled and groaned as quietly as he could, though he couldn’t stop the urge to fill this little body with every drop of his cum.

As the orgasm finally faded, he panted roughly as he held out the limp, cum-filled little chipmunk out before him. The sight of his little cum hole dripping from between those curvy cheeks instantly sent Greg’s erection roaring back to life, and he swallowed some drool. 

As he regained his breath, he quickly fit the unconscious cub back into his shorts, heedlessly staining them with cum. He stuffed his own cock back into his pants, and cradled the cub in his arm. To a casual glance, he was merely a doting father, carrying his sleeping cub home. He could not help grinning to himself as no one stopped him all the way back to his home.

Once he walked in and closed the door behind him, he could not even wait to make sure the transformation was complete, much less for the little chipmunk to wake. He let out a groan of pleasure as he lowered the limp cub down and held him by his head. He used his thumbs to open the chipmunk’s jaw so that he could slide his dripping tip inside his maw. 

“Ohhh…” he groaned loudly. The sleeping boy’s mouth was so soft, and his body heat so high. His youthful body was so light and pliable, everything about the experience sent blood rushing to Greg’s painfully hard cock. 

He pushed in as deep as he could, savoring every inch of the chipmunk’s mouth. As his tip met the throat, he naturally felt some resistance. He wiggled and pumped gently in and out, and each time he felt he was able to push a little deeper, but he still felt constricted by the tight ring of the boy’s young throat. Gradually, thanks to the effects of his cum, he started to feel natural lubrication seeping from the salivary glands in the unconscious chipmunk’s mouth. Each thrust felt better and better. Finally, he felt that deliciously tight throat give way and allow his cock all the way in.

“Rrgh!” he growled. 

He was overwhelmed by the warm, wet tightness that was almost sheathing him completely now. He shivered in pleasure, momentarily having to stop, otherwise he would cum immediately. He stroked the soft fur of the cub’s head as his cock throbbed inside his tight little throat. 

When he felt a little calmer, he began slowly dragging the cub forward and back, taking him around his chubby middle and allowing his cute little limbs to dangle down beneath him. His sleeping face, totally filled with grizzly cock, was utterly adorable. 

Greg’s hips pumped faster and faster inside the sweet little chipmunk. The noise of slight gurgling from the cub’s attempts to breathe while being skewed by the thick bear cock sent tingles down Greg’s spine. He started to lose control of his hips, merely holding the cub steady as he fucked his throat so deep he was sure he was reaching all the way down to his stomach. 

Suddenly, an overly enthusiastic thrust pushed his cock at an odd direction, and it slipped inside the cub’s cheek instead of down his throat. But he groaned once again as he found an even slicker space inside there. Not only that, but even without the effects of his cum, he realized that this little cub’s cheek pockets naturally reached all the way down to his hips. He thrust several time inside each one of them before the urge to cum became overwhelming, and he shoved his throbbing, pointed cock back down the boy’s throat in order to fill his belly.

He snarled and roared as he poured his full load directly into the young chipmunk’s stomach. Even more delightfully, that was the moment that the little cub began groggily moving around as he regained consciousness. 

“Mm…mrh? MGHMGRHGHF!” the cub gurgled as his first conscious experience was having his entire digestive system flooded with bear cum.

Despite his weak struggles, Greg kept the boy’s head firmly fitted against his cock. Cum poured inside him like a firehose. Out and out, his chubby belly grew. His desperate gurgles and the sound of cum gushing inside him filled the entryway of Greg’s home. Finally, just as the cub’s eyes began to roll back as he was once again deprived of oxygen, a tiny amount of cum spurted out from his tailhole.

Greg groaned again at the incredibly erotic sight. Panting, and without removing the cub from his cock, he slowly turned him over so that he could admire the huge, quivering belly. He stroked the soft fur in admiration and grinned. It was already beginning to have a rubbery quality as he became more and more pure onahole. 

He walked the cub into his living room, where he finally relieved the pressure by pulling the cub off his cock by his chubby little legs. Cum poured out from his mouth and onto the floor.

“Pwah!” the cub gasped as his airway was finally free. His eyes were spinning and he didn’t seem fully conscious, but he wasn’t fighting anymore. Perfect.

After giving himself a few minutes to recover, Greg picked up the cub again and poked a single finger inside his tailhole. The chipmunk boy shuddered and a strange, cross-eyed expression met his face. After a few thrusts of his finger, fluids thoroughly slickened the tight entrance. He popped his finger out, and without hesitation, fitted his tip once again into the tight little pucker of the chipmunk toddler.

The cub seemed to be starting to come to his senses by now, but at the same time, his body had shrunk slightly and become rubbery and limp. His limbs were all sticking out like little stumps, and were now utterly immobile. He was adorable. 

Greg grabbed him around the middle, and in one motion, pierced him as deeply as he could. The chipmunk quivered and made an odd noise of confusion. His stomach bulged out as high as his eye level, filled entirely with Greg’s cock, and he didn’t seem to understand what was happening. 

“Mm,” Greg moaned, ruffling the little chipmunk’s hair. “Nice. You just settle down and I’ll take good care of you. From now on.”

Without waiting for the boy to respond, he began yanking him up and down like what he was. A worthless onahole. 

“Oh…uh? Ah…” the chipmunk murmured in confusion as his tummy was repeatedly stretched by the bear cock before his eyes. But whatever his opinion about it, his body could no longer resist. In fact, the changes in his body seemed to be making him enjoy any kind of touch, even this normally deadly penetration. 

The onahole chipmunk continued mumbling incoherently as he was repeatedly and ruthlessly impaled. Unlike a regular onahole, he was warm and quivering, his soft vocalizations vibrating down Greg’s cock. At the same time, his body had become both tighter and more durable, so that no matter how shallow or deep Greg thrust inside him, he remained perfectly encased in the sweet folds of the boy’s digestive system. 

“Mm…I’m going to turn you into a little cum fountain. You’re going to look so cute with your chipmunk cheeks stuffed with my cum.”

He reached around and closed his paw over the stretched out belly, squeezing down and relishing the sensation of the rubbery belly quivering around his length, and the boy’s confused moaning. Experimentally, he began jerking himself off by using the kid’s belly.

“Uwa? Uohh…mnah…ah…” the chipmunk boy protested meekly, his eyes rolling back.

Greg’s paw pumped his cock with abandon, disregarding the desperate noises of the confused boy. He couldn’t believe how good this felt. He was torn between wanting to make this feeling last as long as possible and wanting to see his rubbery body stuffed to the brim with cum. In the end, he didn’t have much choice.

Despite having already cum twice, the idea that he had his own personal fuck toy in his hands, free to do what he wished with him, was too much. He grunted and constricted the boy’s stretched belly with both hands as his cum began to pump into him. 

Thick, glorpy ropes rumbled into the kid’s already stretched tummy. “Oh! Ohh…mno…” moaned the slightly panicked boy, his chubby little limbs wiggling weakly. But his slightest movement only served to draw out Greg’s orgasm even longer.

Greg sighed and released some of the pressure of his paws, allowing the still flowing cum to fill up the cub’s entire body, rope by sticky rope. His body was so small now that, sure enough, even a single load from Greg’s adult bear balls was more than he could handle. His eyes desperately looking up toward Greg as if searching for help, the boy gurgled. His lips instinctively snapped shut, and true to Greg’s prediction, those cute chipmunk cheeks soon began to fill up with cum.

“Pfrh…” the boy gurgled helplessly, cum dribbling out his lips as he failed to contain the load even so. Then finally, “Mbrghhafmh…” Cum spurted out from his mouth in a tiny, bubbling fountain before he seemed to lose consciousness again.

Greg felt completely drained, yet somehow he was nowhere near done. This sight was far too erotic. With barely a paused, he squeezed the little chipmunk’s stuffed onahole body. “BMLRGRH!” Cum roared out from his mouth, and some even leaked out from around the gap that was sealed by his cock. Heedlessly, and despite continuous cum-drowned gurgles, he was once again yanking his onahole up and down on his cock.

Cum burbling up from the boy’s mouth soon turned to foam as the barely conscious chipmunk struggled to breathe. Greg wasn’t sure if it was even necessary for him to breathe, now that the transformation was complete, but either way he was delighted by the noises the boy made. 

At one point, his paw was absently stroking the bulging belly and he felt the slight dip of the cub’s belly button. His claw swirled around the entrance, pleased at how easy it was to control and claim the boy’s entire body. But then it slipped inside. He looked down curiously to see a tiny stream of cum from earlier dribbling out the hole that his claw had just made. He grinned.

Turning the cub around on his cock, he pressed his back down into the couch where they sat, and this time began purposefully trying to fuck the remaining cum out the hole in his belly button. Somehow the chipmunk toddler was still making soft gurgling noises, though by now utterly baffled by what was happening to him. Greg’s cock now unfortunately obscured his cute face, but the sight of his body being reduced to a softly spurting sheath for Greg’s cock was equally hot. 

He groaned and shivered as he fucked the helpless cub against his couch. He couldn’t think of anything except wanting to get deeper inside him, pumping him full of cum until he drowned in it. He’d definitely made a good choice with his first conquest, though he was certain this would only be the first of many.

With more control now after cumming so much, this time it took him a good ten minutes to reach orgasm. When he did, as before, the squirming chipmunk was pumped into a bigger and bigger ball like a water balloon, but this time the excess spurted from his nose and belly button as well as his mouth. 

That orgasm felt so good that Greg needed a break. He sighed as he sat heavily back down against the couch, the cum-stuffed cub still stuck firmly onto his cock and dribbling from every hole in his body. The feeling of his own cum around his length wasn’t as good as the cub’s body though, so he once again heartlessly turned him into a cum sprinkler by squeezing down on his sides. He lifted the cub a little, just intending to squeeze him out more thoroughly, but this time his cock slipped inside the rubbery ribcage.

“Mm…khagh…mbuahhggg…” the chipmunk gurgled in halfhearted protest as bear cock made its way up his chest, into his throat, and finally poked merrily out his chubby little mouth. 

Greg let out a pleased sigh at the incredibly arousing sight. He knew his cock wasn’t going down any time soon, especially after seeing that, but for now he was exhausted. He lay back against the couch and took a nap with the cub still skewered on his cock. He vowed to fuck him even more brutally, testing the limits of his new body when he woke, and indeed was already distantly making new plans to increase his onahole cub harem at the next available opportunity.