Paul was the last one to get to sleep that night, shortly after his wife had finished pumping her breasts of their milk and moving it to the freezer, no opportunity having presented itself during the evening to "play" with Henry again. Paul made it a point to be the one to change his diaper and feed him every time he needed that evening, not wanting to share his boy with his wife, and honestly unsure how she would even respond to Henry's changes. As Paul laid down next to his already sleeping wife, he mulled over how impressive Henry's change in size and strength had been, thankful that they had been given baby clothes in larger sizes by his family already, but he hadn't expected to need it yet.
Exhausted by the day, Paul slowly drifted to sleep. Henry, for his part, had settled instantly at his bedtime, no doubt tired after his own sexcapades. However, unlike the children, Paul slept restlessly. His balls ached, his piss-slit burned, and his stomach had become unsettled by something he ate.
Oblivious to the changes Henry's mutagenic cum was putting him through, his body shifted as he writhed about in bed, tossing and turning. He became hot, sweating profusely as the cum worked its way through his gut and churned about in his balls. The first thing to change was Paul's dick, the soft flesh becoming wider, thicker, and more full. The flesh around his hole was slowly morphing to become more elastic. His muscles shifted about inside his dick to be more finely manipulated, letting him flex his cock to unique effect. His sack grew out to relax the tension on his testicles, which themselves were altered internally in interesting ways that bordered on the fantastical…
The next thing to change was his gut. Paul had something of a beer belly forming since he stopped playing community league soccer a few years ago, but he still tried to make it a point to run and lift in the small home gym he built in his garage, at least until Henry had been born and it became too difficult to find the time. Now Henry was helping his father to get more fit, as the baby's superjizz churning about Paul's insides was playing with his body, burning away a great deal of belly fat to help fuel the next changes.
Changes to his hips, his ass, his thighs. If Paul's previous changes in these areas had been nearly imperceptible, these new alterations to his body would definitely stand out. His pelvis shifted slightly in his body, widening, causing Paul to grimace in pain, whimpering in his sleep as he tossed about trying to find a comfortable position to sleep in. Which was made harder by his new fat ass. A round, bubbly butt that would jiggle when he walked. And legs to support that. Thickened about and firm with muscle, his thighs looked impressive, toned, and sexy. His legs changed to become so thick around Paul wouldn't be able to close both his hands around either leg, and his thighs created a handsome gap in-between his legs, further accentuating his new more motherly looking hips.
The rest of Paul's body shifted as well, although in less dramatic ways. His biceps swelled slightly and the muscles in his forearm became like steel cables giving him a monstrous grip. His face however softened, his hair lengthened slightly, while much of his body hair on his chest began to fall out on its own. His chest swelled with fat atop his pecs into barely noticeable breasts. His nipples rubbing against the sheets hardened to firm points jutting out from his bare chest, barely more than nubs but so sensitive. It almost distracted him from the soreness in his balls. But fortunately the stinging in his cockhole had subsided, his dick finally changing enough that a constant lubrication of clear pre coated his urethra, and his opening changing again to better accommodate his newest proclivity.
The stimulation of his nipples continued as he shifted about uncomfortably stirring him mostly awake. Feeling sweaty and hot, he threw off his sheets and stared up at the ceiling. He ached. His very bones felt sore. He had gotten no rest, regardless of how much he'd slept. Looking at the clock, he saw it wasn't even quarter to one and sighed before lying himself back down. Where he had laid was soaked with sweat, and he was miserable.
Turning on his side to look over at his sleeping wife, Paul felt overwhelmed with love and pride, and a twinge of jealousy and regret. He loved this woman, adored this woman, and he was a tad envious of this woman. And with a stirring in his loins, he could admit he was a bit frustrated by this woman. They hadn't fucked once since Henry had been born, and there hadn't been much sex while she was pregnant with him either. Before Steve, he was fucking Julia every night it seemed, and twice on the weekend. But age and careers and becoming parents had strained that a bit. Paul didn't resent her for it, but it left him rather pent up. Maybe that was why he so readily fucked his son's super cock. That baby urethra felt better than pussy to Paul after so long without sex. His dick hardened again at the thought of baby dickhole fucking. Paul reached into his boxers to fondle himself and wound up tickling his tip and the leaking hole on his dickhead.
Paul shot upright, and walked on uneven feet to the bathroom to look at his changed dick. He looked down on himself, and his whole body, with intrigue. His arms were much stronger, his hips were wider, ass juicier, and his legs felt like he could crack a coconut with them. His belly was thinner, and his face much softer. His chest, despite being more sensitive to the touch, still looked pretty manly to him thanks to his strong muscular build. Despite his many alterations, no one would mistake Paul for a woman. But they definitely wouldn't consider him a man in his mid thirties, he looked to be a very androgynous figure in his early twenties. And, looking over his shoulder at his new fat ass, he probably actually could be mistaken for a very tall teenage girl when looked at from behind.
He was admiring himself in the bathroom mirror for a short while, appreciating these changes, and contemplating how it happened, even though subconsciously he already knew but refused to acknowledge, when a noise came over the baby monitor on his nightstand. Paul walked over to it and turned it off before checking to see that he hadn't woken Julia. He looked down on her again with mixed emotions.
Julia had become something of a career woman after Steve had been born, focusing a lot of energy at work. So, after Henry was born, she rushed to return to work, pressuring Paul to quit his job to stay home and raise their sons. It had been a little humiliating to be reminded of how much more she made then him, that him losing his job outright would be better for their family then him providing, but he stuck it out for the kids sake. Julia would pump her ample breasts every morning and evening, rarely feeding Henry directly, but just freezing or refrigerating her milk for Paul to feed their son later, which Paul sometimes had to supplement with formula to make it last. Paul looked over her naked sleeping form, stomach churning with lust and envy. Her butt was still bigger than his, and her breasts so full, even leaking slightly with how productive she was. He wondered if she wasn't holding out on him. If some of her milk was going to someone else. He had been suspicious of her maybe cheating on him with someone at work, but never had any proof. He scanned over her lovely form again, anyone would be happy to have her. And now that she makes more than him, Paul worried she might be trying to do better. With her looks, she probably could, he thought. The fading stretch marks across her belly did nothing to detract from her beauty, and he loved her for that, but right now he envied her that perfect body. And he jealously wanted to guard it for himself.
Figuring the stirring he'd heard was just Henry getting hungry in the night, as he still sometimes did, Paul crept to the kitchen, not bothering to cover up. He warmed a prepared bottle from the fridge, absentmindedly stroking his cock to thoughts of his wife.
His thoughts shifted from his wife to his son as he finished the preparations. Henry's urethra had been so much tighter than his wife's pussy. His strong baby boy had such control with his cockhole that he could squeeze and massage Paul's dick in ways he'd never felt from any other hole he'd ever fucked. And that was before I'd gotten bigger tonight, Paul thought to himself. And that feeling… being filled be his spunk…
Paul was lost in his thoughts, daydreaming in the kitchen, naked as the day he was born when Steve slipped out of his room intent on getting Henry to fuck him. Paul never heard a thing, as he was busy stroking himself while idelly fingering the opening to his own slit. He placed the nipple of the boy's bottle in his mouth as he reached down with one hand gripping as tight around his base as he could and placing his middle finger over his dickhead. He was determined to finger fuck his cockhole properly this time.
With a tiny amount of force, his digit went straight into his already slick slit with barely any resistance. Paul was shocked. His hole had grown and stretched so much since just this afternoon, it was incredible. But it didn't feel as incredible. Paul felt loose, empty even. Guess one finger just won't cut it anymore, he thought as he slid out of himself and put his ring finger in with it.
Now he was getting somewhere.
Feeling good, his dickhead stretched around his two fingers, Paul stroked himself off to prepare himself for Henry. With the boy's bottle still in his mouth, he walked towards the room with his perfect fucktoy in it.
Paul felt a small twing of guilt thinking about his boy as some living fleshlight, but with that boy's nearly two feet of meety cockflesh between his legs, he will grow up to be nothing less than a sex god. And Paul was ready to worship his son's body.
He was in the hall outside the door, just slightly ajar, when he heard what was going on inside. Steve was slowly bouncing up and down on Henry's mammoth rod, trying to get as much of that spire of masculinity into his asshole as he could.
It took a brief moment for the scene to register in Paul's mind as he could see his oldest submitting to his youngest, one son sodomizing the other, but in the dim light of baby boy's nightlight, Paul watched rapt by the scene. His eyes already adjusted to the darkness, it wasn't hard for Paul to peak through the crack in the doorway into the room to watch the erotic scene.
It was too much, he needed to cum. Paul began jacking himself off standing in the hallway. He moved his two fingers back and forth inside himself, alternating between pistoning deep into himself as he stroked his shaft, and using his two fingers to one after the other to pleasure the inside of his slit. He shoved his middle finger down forcefully, flexing his knuckle to scrape up the inside of his urethra while he gripped tightly on the underside of his cock and bounced his hips in rhythm with his son.
He was so proud when he saw Steve make it to the bottom, Henry's entire godly length jammed into his brother's behind. He was proud and impressed! His boy was so big! Both of them were, in more ways than one. How did he even fit all that inside himself, Paul wondered.
He watched, pumping his own cock furiously, as his eldest son took his baby boy's load right up his ass, never spilling a drop of Henry's precious cum. Steve's own immature jizz spluttered out Infront of him in limp arcs, but Paul was proud nonetheless of his boy and happy seeing him cum from the pleasure of having his ass stretched so wide and his insides visibly filled with Henry's spunk. Paul memorized the scene before him, wanting to never forget this moment. His own cock stiffening around his fingers, his hole slick with his own juices from where he was masterbating the inside of his cock, with a puddle slowly forming on the floor.
His eyes rolled back into his head, and he took a deep breath through his teeth, barely remembering the baby bottle he'd carried over here in his mouth, no doubt looking quite foolish. He replayed the images in his mind of his boy slamming down on his brother, his belly stretching out to accommodate Henry's stallion prick, and swelling out with all of his amazing cum. Paul was lost in his euphoric dreams, offhand vigorously pumping his swollen cock, while his main hand pistoned his two fingers as deep and as rapidly as possible, flexing his knuckles to slide his fingertips along the most of the inside of his dick every time he pulled out, before slamming them back in till he practically punched his spongy head. He kept going at himself in a fury of desperation, certain he could feel an orgasm almost coming but never quite arriving. It was maddening. He needed to cum. Why couldn't he cum? So clo-
Paul was snapped out of his stupor when he heard Steve make a sound, right in front of the door, having cleaned up while Paul was trapped in his own thoughts of sex. Paul was a mere foot from his boy, dick out on full display and with his fingers jammed deep into his cock, he panicked. Had Steve seen him? What should he do?