Jeff was just about to sit down when the baby girl got a weird uncomfortable look, her face scrunching up slightly causing him to freeze in place.
"Mom, are you okay? What's the matter?" Jeff asked worried by her sudden distress.
The toddler mother flashed her teenage son a smile. "Everything's fine honey, I just need to make-"
A low fart escaping her rear silenced her as she felt a few solids drop into the seat of her diaper, the padding crinkling as it expanded. Jeff's eyes saw the back of the garment push out from her mess, the large bulge reminding him of the one in the front of his pants. His throat went dry and he had to resist the urge to reach out and touch it, to feel the load she just made.
"Poopoo..." she blurted out, finishing her earlier statement though with a now reddened face due to pooping her diaper. Despite her embarrassment she felt a wave of relief wash over her following her number two, followed by a sense of joy? She was happy she pooped herself? Realizing she was she giggled and kicked her legs feeling her full padding jiggle from the motion.
"Mom, you are feeling okay?" Jeff asked, his concern snapping him out of his horny thoughts at seeing his mother acting her age. He was worried that maybe the Chronoivac malfunctioned and her mentality was affected.
"Yeah, sorry for scaring you by getting in touch with my inner baby there. However it made me realize that returning to the life of toddler won't be as hard as I thought" she admitted. "In fact I think I already got the whole using diapers thing down."
Jeff chuckled, "If you say so. Hey do you want me to change you?"
"Not just yet. I want you to check my diaper first, if you know what I mean" she gave him a suggest wink before her face became all pouty and she whined "Jeff I think I have a poopoo diaper!"
As fate would have it the end of her sentence was also the moment the smell of her soiled garment chose to make itself known, filling the room with the scent of dirty diaper. The rancid aroma renewing Jeff's horniness he eagerly fell into the roleplay.
"Okay come here Janet and let me take a look" Jeff said using his mom's actual name as he sat down and patted his lap. The toddler girl rolled over onto all fours and eagerly crawled onto it before laying down with her padded crotch on top of his and her bottom facing upward. Staring down at he noticed that it was a Huggies disposable, white with Winnie the Pooh designs on the outside, ironic given what was inside. While Janet amused herself by moving her arms and legs around Jeff began the process of inspecting her stinky butt. Placing his hand on the bulging seat of the diaper he immediately felt the solids contained within.
"Now let's see if little Janet has any boom-booms in her diaper" he teased as he began rubbing the back up and down, his penis leaking pre as he were rubbing it instead. He repeated this action for minutes before being satisfied. "Okay I feel like something might be in there" Jeff said and Janet giggled at how he was dragging this out. "Alright maybe if I smell your diaper I can find out for sure." Leaning down he sniffed light at various parts of the garment all while avoiding the rear, saving the best for last. When he did get to it he leaned in close and pressed his nose right up against the fabric. Inhaling deeply the stench of her poo caused him to cum in his jeans, straining his brief with spurts of his seed. Riding out the orgasm by continue to huff the toddler's butt Jeff eventually pulled away and breathed fresh air.
"Jeff are you done yet!" Janet whined impatiently from her lying position. "Almost, just one thing I gotta check." Grabbing her underneath the armpits he lifted the baby girl up into a standing position in front of him and turned her around. Panting from his release and excitement Jeff hooked a finger in the waistband of the Huggies and pulled back to peek inside. The sight that met his eyes was glorious, three brown logs of varying sizes were pressed together near her buttcheeks, which had brown smearing on the inside. Staring at her mess a moment longer Jeff finally let the waistband snap back with a chuckle, "Well that proves it. You Janet are a little poopy monster." She then turned around and faced him with a happy grin, "Really?" Not only was she happy to hear him called her that but also from the excessive attention he gave her padding. "You sure are" Jeff smiled back as the toddler and teen gazed at each other lovingly.