“Sidney you need to at least make an effort in your potty training.” Mr. Tyler said “Do you want to stay in diapers forever?”

Sidney sighed and looked away. Of course she didn’t want to stay in diapers forever, but she didn’t want to potty train yet. Why couldn’t everyone else her age just wear diapers? Then no one would care and she could just enjoy herself.

Mr. Tyler finished changing her and patted her diaper “Sidney I hope you’re listening.”

“I am! I am!” Sidney said

Mr. Tyler smiled “Good. I’ll walk you to class. Don’t worry, I won’t tell why you were late.”

“Thanks.” Sidney said

Mr. Tyler led her out of the other reality. Sidney sighed, dragging a little as her diaper shrank into a pull up. She stared at the little flower designs on the front until her pants formed over them.

“Sidney?” Mr. Tyler asked

“Coming!” Sidney said, taking the last few steps and feeling herself return to panties. She walked into her class.

“It’s my fault she’s late.” Mr. Tyler explained to her teacher “I was discussing a problem with her.”

“You mean changing my diaper.” Sidney corrected under her breath

Packing for the road trip was pretty normal for Mia, with the exception of her mother double checking to make sure she had enough pull-ups. She wasn’t expecting anything strange to happen on the trip, or at least nothing stranger than had been happening, but they were barely out of town when Mia’s pants suddenly puffed out.

“Huh?” She asked. She pulled her pants down a little to check. There were tapes on either side of her undergarment. She was wearing a diaper!

“I, um… ah!”

Mia gasped as the car seat elongated and stretched around her. Straps appeared across her chest, securing her nice and tight. She sat there in surprise, feeling her new baby seat.

“Something wrong honey?” Mia’s mother asked

“No, nothing…” Mia said, still trying to comprehend what had just happened. She patted her well-padded crotch “Um, actually, why am I wearing diapers?”

“I know you’re embarrassed honey, but it’s just for the car ride.” Mia’s mother said “We can’t make potty stops very often, so if you need to go potty, just use your pants. I promise you can go back to pull-ups as soon as we get there.”

Mia was still nervous about the reality shift, but the fact that her parents still perceived her as older was good. She lay back and tried to relax for the rest of the ride.

When they got to her cousin’s house, Mia unbuckled herself with some effort and climbed out of the car. As soon as her feet touched the driveway her outfit began changing again, twisting and pulling and suddenly she was in just a loose t-shirt and her diaper.

“Whad happenin’ ta me!?!” She asked in panic. She didn’t have any time to think about it though, suddenly the urge to pee hit her.

“I- uh- potty!” She said. Her mother reacted surprisingly quickly. She pulled a training potty out of nowhere and slid it under Mia. She pulled her diaper down and pushed her gently onto the potty. Mia didn’t really understand what happened, but she lost control a second later.

Mia sighed, feeling herself pee in the potty. That had been close!

“Wow! Nice job buttercup!” Her mother said. Mia glowed proudly. Of course she’d done a nice job, she wasn’t going to pee her diaper like some baby!

She didn’t even notice that her diaper was wet from the multiple wettings she’d had while asleep on the ride. Nor did she think much of using a training potty on the driveway in broad daylight or her mother changing her back into a pull-up before they went inside.

Her mother plopped her in a playpen in the middle of the living room as soon as they got inside. Her cousins, Ellie and James, were sitting a short distance away. They were both dressed as babies and drooling on themselves.

Mia looked at her cousins “Umm… hi?”

“Pffft!” Ellie blew a spit bubble. James sucked his pacifier and looked around with wide, curious eyes. Mia frowned and crawled over to them. They weren’t exactly shy about their diapers so Mia was able to pull back their waistbands without protest. They’d both pooped.

“Why are you babies?” Mia wondered out loud. Ellie was three years older than her and James was four. If anything they should have been kids running around in underwear, not drooling diaper babies!

“We’ll get the room set up.” Mia’s dad said “Can you watch Mia?”

“Sure.” Her uncle said. Mia’s parents left.

“I didn’t know you could potty train someone so young.” Mia’s aunt commented “I mean, maybe at 23 or 24 at the earliest but before even 20?”

“She’s not really potty trained.” Her uncle explained “I’ve seen what they call ‘potty training.’ They recognize when she’s about to use her pants and switch her diaper for a training potty just before she goes. She can’t even hold it, she just kind of knows she’s doing it.”

“Nod twu!” Mia protested. She’d never actually used her diaper!

“Here, I don’t want to deal with her leaking all over.” Her uncle said, pulling out a diaper “We’ll just tell my sister that she had an accident in her pull-up.”

“No!” Mia said, trying to scramble away from the diaper but her arms and legs were surprisingly uncoordinated. She stumbled and fell on all fours. Her uncle calmly pulled her onto a changing mat and pulled off her pull-up and taped the diaper around her waist.

Mia tried to get to her feet but she was barely able to squat without falling over. She grunted in frustration, babbling to herself, completely unaware of just how much like a toddler she looked.

After the third try, Mia was adjusting herself when she became aware of a weight in the back of her diaper. She put a hand on her butt. It wasn’t possible but… she’d just pooped herself without even noticing.

“See?” Uncle Tony said “She’s just a dumb baby. She can’t do anything but poop her diapers and drool.”

“Dumb… baby?” The words seemed to ring in Mia’s ears. She cringed and looked at Uncle Tony, who was looking straight at her and pointing.

“There, she’s drooling. Does that look like a child ready for potty training?”

“I… ah, ssstoph…” Mia said, putting up her hands to try to shield herself from whatever her Uncle was doing to her. It was like he was changing her to what he thought she was supposed to be!

“No, but she’s still so cute, even if she did just make a present in her pants for us.”

With Aunt Ira’s comment, Mia’s sphincter muscles went numb. She gargled in panic but she was no longer potty trained. Warm mush filled the seat of her diaper.

“Let’s change your diaps, you little stinker.”

Mia put her thumb in her mouth and began sucking.

“Garba boo!” She gurgled. It was the best she could do, her mouth had gone numb too. She lay there passively, letting her aunt change her diaper and then return her to the playpen.

Mia looked down at the thick diaper between her legs. She couldn’t walk, she couldn’t talk, she couldn’t make it to the potty, what did that make her? Maybe she was just a baby pretending to be big.

“Pway?” Ellie offered her a doll.

Mia broke.

“Ga goo goo!” She cooed, completely oblivious that she was wetting herself