You try to take it slow, but the canister has other ideas

Licking your lips, you point the nozzle of the canister towards your girlfriend's waiting abdomen, she giggles slightly and wiggles her hips in anticipation. You ready your finger on the release button, and... push lightly, just a little bit, you don't want to go overboard here

But you've underestimated how pressurized it was, the spray comes out with surprising ****, more like a hose set to spray than a simple spray bottle. Carrie and you both yelp with surprise as her flat belly is coated with a thin sheen of the liquid, with a small amount that had splashed upwards to her tits.

"Oooh it's cold." She says.

You're already reaching for some paper towels to wipe off the excess, but Carrie stops you.

"Waitwait! What are you doing?" She asks

"That was way too much, I was gonna try and.." you start, but she interrupts you again

"Noooonononono. No way, you want a fat gut, I'm gonna get a fat gut, don't chicken out on me now." She says, her voice going stern.

Already the wet sheen was disappearing as the liquid was being rapidly absorbed into her skin. You swallow nervously as Carrie lets go of her shirt. She doesn't look any different, though barely a minute has passed.

Her face seems to cycle through a variety of emotions, she looks thoughtful, excited, unsure, curious... surprised... then she suddenly dashed away, heading straight for your kitchenette.

You stand up and follow after her, watching as she throws open your fridge and begins stuffing her face with... basically everything, inhaling your leftover dinner from last night, then eating a whole head of broccoli raw, she rips open a packet of chocolate cookies and rapidly scarfs down every single one, grabs a bottle of milk and skulls the entire thing, she is consumed by her desire to consume.

But as she eats every available bit of food you have in your apartment, you can see the effect kicking in, already her belly is swelling. Something insane was going on inside her, because not only was it swelling, it was also softening, like the food she was eating was being almost instantly digested and converted directly into fat.

After nearly an hour, and, as you had predicted, everything edible you had disappearing down her hungry gullet. She finally stopped, collapsing to the floor with a loud, satisfied sigh.

"Oooh oh wow" she sighs, slapping her newly fattened gut.

It is big, not impossibly huge, but far bigger a pot-belly then you'd ever expect to see on a girl Carrie's size, it rolls easily over the waistline of her pants and jiggles with even the slightest touch.

She looks like the fantasies you had of her when you first started dating, of what she would look like if she was chubby, not fat, just chubby.

She looks up at you with a self-satisfied smile. "You know the weirdest part" she says in a slow, languid tone. "I don't even feel full"