Mommy says I'm not allowed to cum until I wet my diaper in front of her. I argued of course, but all she says is "you don't have to do it if you don't want to cum."
I thought she just wanted to humiliate me by making me wear a printed baby diaper for her, but using it in front of her is another level.
I relent and relieve myself a tiny bit, but Mommy says that's not enough. She wants to see my diaper sag. I'm desperate to cum, she hasn't allowed me to in days and I'll do whatever it takes.
I close my eyes and take a deep breath, allowing my body to relax. Eventually my bladder gives in and I fully empty it in my diaper.
Mommy giggles and I open my eyes. "Good job!" She says as she tosses a pillow on the floor in front of me. "Now use that to cum for me."
I stare at her, trying to process what she wants me to do.
"You want me to get naked and hump the pillow until I cum?"
"Not quite. I want you to hump the pillow until you cum, but I want you to keep your diaper on while you do it."
"There is no way I'm doing that!"
"You don't have to do it if you don't want to cum." She laughs again. "But that means you wet yourself for nothing!"
My face burns in humiliation as I look down at my sagging diaper.
I get down on the floor and straddle the pillow Mommy gave me. I slowly lower myself onto it, feeling my wet diaper squish around my body.
"Good job!" Mommy coos. "Now what do you say?"
I struggle to get the words out as I rub myself on the pillow.