“A big part of diapers isn’t just the fit, but also how well they work,” Tina explains, bringing Leah into the bathroom. She lays Leah on the changing table and removes her dirty diaper. “Your help with the fit made it possible for me to narrow the diapers down to a few brands, but I don’t know whether they actually will hold up.”
“Wait…” Leah gapes. “You want me to actually use diapers?”
“Think of it like testing them, not using them,” Tina says. She begins to wipe Leah down. “Whew, stinky!”
“I’m all empty,” Leah says quickly. “I can’t test any diapers while we’re in the store.”
“Judging by the size of your mess, I’m not sure that you actually are empty,” Tina says. She lifts Leah’s butt and slides a fresh diaper under her. “I think you have enough in you to go number two a couple more times.”
“While we’re in the store?” Leah squeaks. Tina tapes the diaper on.
“Well, at least one more time while we’re in the store. I have a few errands to run after this, so if you don’t test all the brands before we leave, you can test them while we’re doing errands. And if I don’t like them, I’ll return them before we go home.”
“But-”
“Just put up with this for me, okay?” Tina says. “It’s not as bad as you think. You won’t be having an accident, you’ll be doing it on purpose.” Without listening to Leah’s response, Tina picks her stepdaughter off the changing table and sets her on the floor. “At least, if you cooperate, it’ll be on purpose.”
Leah swallows nervously, worried about what tina is implying.
“…Fine.”
“Thank you, sweetie! So, just use that diaper of yours at some point while we’re shopping, okay? I need you to use it for number one, and then number two,” Tina instructs. Leah nods. She follows Tina out of the bathroom, toddling due to the thick diaper spreading her legs apart. All she can do is be comforted that there’s no chance anyone will recognize her.
A few minutes after the change, Leah tries to pee. To her surprise, she doesn’t need to stop and focus; she wets the diaper while walking.
“Tina, I peed,” she informs her stepmom. Tina sticks a finger down the back of Leah’s diaper.
“Hmm.” She picks Leah up and looks her over carefully, even squeezing Leah’s diaper a few times. “All right. Now, just go number two at some point so I can see how this brand handles messes.” Tina sets Leah on the ground.
Soon after wetting herself on purpose, Leah decides to go number two. But she’s scared of doing it while someone is watching. As such, she tries to hide behind a display. She bends her knees into a squat and pushes. Slowly, a log begins to enter her diaper. Leah grunts a bit from effort, desperate to get it over with as fast as she can. Her face turns red.
After what feels like forever, she finishes. Leah straightens with a soft sigh, her diaper sagging under her. She immediately blushes as she realizes that someone was watching her fill her already damp diaper with poop.