As Sarah scrolled through the list of fetishes on the Chronivac, she saw one labelled simply, 'diaper'.
'Gross,' she thought. She attempted to continue scrolling down, but as she was still unfamiliar with the device, accidentally pressed the diaper button. She tried to undo her mistake, but she accidentally pressed the apply button too, giving her and her boyfriend a fetish for diapers.
Suddenly, the idea of wearing a diaper didn't seem all that bad. In fact, it turned her on. As she thought about herself not being able to use a toilet anymore, she began rubbing her pussy. Jeff walked into the room.
'Did you make me like diapers?' He asked, his cock hard.
'Yeah, sorry. You wanna try it out though?' Sarah said.
'Sure,' he replied. Sarah went on the Chronivac and made both of them wear a diaper. Before she could hit apply, Jeff stopped her.
'Wait, change this too,' he said, making them both incontinent. Sarah got horny over the idea of not being able to control her bowels.
She hit apply, transforming both their pants into a soft, white diaper between their legs. Jeff's hard cock tented the front of his diaper, making the tip stick out over the top. Almost immediately, Sarah wet herself, unloading her entire bladder into her diaper. It felt warm, and she enjoyed the feeling.
Jeff was unhappy with how his dick didn't fit in his diaper.
'Would you mind if I made my cock smaller?' Jeff asked, reaching for the Chronivac.
'Go for it,' Sarah said, as Jeff shrank his cock. He looked down into his diaper, watching his dick shrink from its once decent size to a tiny, 0.5 inch baby dick. His balls shrunk from grape sized, to now being the size of peppercorns. He loved the feeling of the fabric rubbing his tiny cock; seeing it fit perfectly into the front of his diaper.
Jeff and Sarah started passionately kissing, and rubbing the front of their diapers together, as Jeff's cock was no longer capable of penetration. Suddenly, Jeff unloaded his bladder into his diaper, turning the fabric a light yellow color. The smell of piss filled the room, making both of them hornier.
Jeff grabbed his girlfriend and put her on the bed, opening her diaper. He changed her diaper, rubbing her wet pussy as he did it. Sarah did the same to Jeff, changing his diaper and putting her mouth on his crotch, fitting his cock and balls into her mouth easily. After this, they took off their diapers again, and they rubbed their crotches together until they both orgasmed.
It was clear that neither of them wanted to get rid of their diaper fetish; it made everything much more interesting. Even though it was practically useless, Jeff loved his new tiny cock. As they both lay on the bed, they thought about what to do next.