"Uh-oh, smells like somebody made a stinky." His father teased him, examining his heavily filled diaper, giving it a small squeeze so he could feel his mess squishing against his rear.
He wasn't sure how it had gotten to this point. After he had moved back in with his dad, things seemed to start changing more and more. Little things at first, like his dad suddenly making him food more, especially mashed food, and stocking the fridge with lot of milk while encouraging him to drink it. His dad was also buying him some weird clothes, looking like overgrown kiddie outfits, brightly colored cartoon illustrations and overalls. It was a little embarrassing, but he still wore them, if only because his dad wanted him to. He didn't want to admit they were comfortable.
Similar things happened to his room and bedsheets, with his father suddenly buying him lots of kiddie toys and plushies. When he told him he collected figurines, this wasn't what he meant, but he still kept them. His dad had also gotten a big floor mat and bedsheets that looked out of a toddler's bedroom for him, to his further embarrassment, but he couldn't complain by then. He was waking up soaked each morning, unsure why. He hadn't been a bedwetter since he was a kid. His father told him his new sheets would be easier to clean after his nightly accidents. He had even recommended him diapers for the night, which he reluctantly wore, but the longer he did, the more used to it he was. They were awfully convenient. He even found himself deliberately wetting them, and wearing them casually. He didn't even notice anymore, so the one last time he wore underwear and pants, he suddenly found himself uncontrollably pissing himself, before breaking down crying as the warm urine spilled down his legs and onto the floor. His dad was there to comfort him, but told him that he should probably be wearing diapers 24/7 from then on, which he reluctantly did so, not wanting to make a mess again.
Soon it just became normal to wear diapers, and afterwards things started changing even more. He'd found himself sucking on his thumb unconsciously too, like he needed something in his mouth. One morning he woke up to find his dad had gotten him a bunch of pacifiers to suckle on too. Now that he was diapered constantly, his father bought him even more babyish clothing, like adult-sized onesies. Soon his dad had also gotten him a giant high-chair, and asked him if he'd let him feed him, which, strangely, he agreed to. The last thing was his father taking his bed out, replacing it with a giant crib which he said would make him sleep easier. Oddly enough, it did, and he found himself drifting off to sleep, watching the mobile spinning above his head.
He had even begun acting like a giant baby now. He only watched brightly colored educational cartoons now. He'd started having trouble speaking now, forgetting certain words and babbling excitedly when he wanted to tell his daddy something. Since his dad had put child control son his computer devices, which he found himself struggling to use anyway, he instead resorted to playing with the baby toys his dad had gotten him, and having a surprisingly great time of it.
A part of him was still embarrassed by what a big baby he'd become, but was it so bad really? His dad was taking care of his every whim. He could go to the bathroom whenever he wanted. He spent his days now adored by his father, playing with fin toys, and wearing cute clothes, even if it did take a little bit of adjusting to get used to, particularly the diaper changes. Sucking on his pacifier, he nodded at his father's question, "Yes Da-da, I make big stinkies." He nervously grinned as his dad laughed, "That's my boy! C'mon, let's get you changed little man." He said, leading his son to the changing table. He still wasn't sure how it'd gotten to the point he'd utterly regressed and became a baby again, but at least he was content with it.
