Paul was brought out of his stupor by the sound of Henry, cooing softly. The boy's eyes seemed transfixed on his father who had just masturbated himself in front of his youngest son. Paul laughed dryly at the situation, looking at his boy lying naked on the floor caked in his excessive cum, he wiggled and flexed his pinkie about in his urethra, feeling even more pleasurable than before. Paul softly grabbed hold of the base of his cock and pulled his finger out of himself, the digit seeming bruised by the tightness of his cock sucking down on it. Then, taking stock of his surroundings, Paul considered his next move.
Judging by the still wet cum all over the floor, and all over himself, Paul figured this second masturbation session likely only lasted a moment. A bit embarrassed at his unexpected quick shot, Paul finally stood himself up.
His balls now sagged to his mid calf, full as they were with jizz, and he would have had a hard time putting them away in his khakis. His pants were ruined beyond saving anyways, soaked through as they were with Henry's super jizz.
Henry, for his own sake, seemed to have shrunken down somewhat, which confused Paul slightly. His son had previously had a two foot erection, and that perfect tool of his couldn't have just disappeared after all. But, when Paul was able to walk bowlegged over to Henry and pick him up, he found that his child's penis had changed in a strange way.
The boy's dick was still wider than a beer can, but looked even wider now as the entire organ had compressed down into itself, an almost equine looking sheath forming out of the boys foreskin and extra cockflesh to contain the boy's incredible penis, his balls even larger than his father's and sagging down between the baby's knees, sack not nearly as tight given his naturally superior cock.
Paul couldn't help but be overwhelmed with pride at his youngest son's perfect dick and the sack to match. Yet, as much as the man wanted nothing more than to get his boy up for another round, pumping his swollen sore dick into his son's cock till they could share another massive explosion between each other, he was simply too spent to go again now. And, looking at the clock, Paul realized it was almost time to eat, and his wife would likely not understand what he was doing, and maybe even try and stop him from worshiping Henry's amazing cock in this special way only he could.
Quickly wiping Henry down and putting him in a fresh diaper, Paul had to shift things about oddly to get the baby's oversized junk to fit, ultimately settling on a looser oversized diaper to accommodate the boy's incredible size.
Turning about to start to clean the room and himself, Paul was a bit surprised at how little cum was still stuck to him. If he didn't know better, he'd think he had absorbed it or something. But such a thought was ridiculous, regardless of the current situation and what he had just been through. And there was still plenty of wet sticky cum all over the floor where he had been kneeling and the wall behind him where he'd been splattered so thoroughly.
First reaching for a towel, Paul got on his hands and knees, naked hairy ass sticking up into the air for all to see, unknowingly giving baby Henry a show. The mutagenic semen he had been forced to ingest straight into his cock was subtly altering him, causing his ass to grow wider and more full, his hips shifting out almost imperceptibly. Henry stared silently at the scene in front of him without understanding, but his hormones were still acting on him in strange and unexpected ways. He pulled himself to his hands and knees, rocking back and forth as the muscles in his limbs grew, his arms and legs lengthening slowly till the baby barely a few months old had added almost three inches of height in a matter of minutes, and had further developed his unnatural strength gaining muscle definition for his size that would have been the envy of any man on earth. The toned baby boy, now the size of a child twice his infantile age, crawled about on the floor to get a better view of what was going on, but kept having his attention drawn back to his father's exposed ass.
Paul continued cleaning oblivious to these slow developments. His towel quickly became saturated beyond usefulness, and Paul was just smearing this jizz around the floor when the memory of its taste played on his tongue, its smell right in front of his nose. His self control having already been weakened, Paul acted on pure instinct as he reached down and scooped up a handful of his child's cum and brought it to his mouth to drink. It was so thick and virile, it was more like chewing on pudding, and tasted salty, sweet, and bitter all at once, and Paul instantly addicted slurped it all down quickly and went back for more.
He quickly consumed as much cum as he could find, before licking his hands clean, even going so far as to suck it all off of the towel. He felt warm with all of this super cum in his belly, imagining even that he could feel Henry's sperms swimming around inside of him as though they were trying to impregnate his insides. He pushed on the outside of his stomach, almost expecting to be visibly bulging from the sheer amount he had consumed.
Looking around the room, Paul couldn't see anymore cum for him to lick up, so he wiped the few dried strands that had caked into the floor before he could get to them with some baby wipes before picking Henry up and sneaking into his bedroom to get dressed before his wife finished dinner, lucky that his older son was so engrossed in his video games.
Once done and the two are presentable they head down for dinner. Neither Paul nor Steve make any mention of what they experienced with Henry over dinner and Julia sits oblivious to what is happening with her family, but can't help but notice how tight Henry's onesie is on him all of a sudden.