Stop Sofia by fucking her again

You run after Sofia, your superhuman futanari body having quickly and easily recovered from Sofia's calamitous blowjob. Sofia seems unencumbered by her gigantic mass, but her speed is still lumbering slow compared to your toned and honed body.

Your plan is simple: Sofia loves sex, and if you fuck her, she'll be incapacitated until law enforcement or the army or whatnot comes along. Just gotta hope that you don't cum inside her - if it leads to another growth spurt, her blowjobs aren't going to be the only calamitous thing about her.

You overtake Sofia easily, but find yourself immediately at a logistical impasse: your cock isn't long enough to reach her vag through Sofia's fleshy walls - neither from front nor back.

New plan: you try to reason with her.

Sophie: "C'mon now Sofia, you're causing a scene."

Sofia: "I'm like, totally fine! I've had enough laying around indoors, I wanna go to a bar for like, hookups and stuff."

Sophie: "But it's 8am, the bars are all closed."

Sofia: "Ooops! I'm so dumb, laawl... Then I'm gonna go buy a cute pink purse and a new bikini. Plus I need like, a, ohmigod, I need like one of those cute little fluffy doggies to carry around!"

Sophie: "You mean a pomeranian?"

Sofia: "Chyah, probably!"

Sophie: "Aha. What are you gonna pay those with?"

Sofia: "I've got like, my credit card don't I?"

Strangely, she pulls out a shiny golden card from... somewhere. She laboriously reaches forward to stick it into your face, and you can see that it reads 'Sofie's Goldy Card' [sic]. Underneath the text is a digital display showing the infinity symbol, probably referring to the account balance.

Sophie: "But credit cards aren't just free money, you've gotta pay for it later, and usually with interest!"

Sofia: "Nuhuh, this one is prepaid, it like, comes with the bod."

You're unsure how that works, but maybe bimbofication has more perks than you thought?

Sophie: "Absolutely not."

Sofia: "Yah!"

Sophie: "Well let's test it, then. Let's go buy ice cream."

You and Sofia walk down to a small kiosk a few blocks away that you're a regular at. The attendant is so terrified out of his mind seeing you lug around a ten ton monstrosity like Sofia that he completely ignores the fact that you have a raging foot-long erection.

Sophie: "Two double scoops of chocolate, please."

Ice cream salesman: "S-screw this, I'm outta here!"

The guy tries to bail, but you grab him by the collar and pull him back behind the counter.

Sophie: "Nahway, we're doing science. Ring me up, loser."

The man shakily takes Sofia's card. It registers, and the payment is processed normally. The display on the card briefly shows '-$6,00' in red, before it fades away leaving only the infinity symbol. Sofia doesn't quite comprehend the implications of this, but you sure do.

Sophie: "Sofia, I think you and I should be the best of friends from now on. Let's go buy that bikini, and that purse, and the dog!"

Sofia: "Yay!"

From there begins your dastardly and ruthless financial exploitation of Sofia. You go easy during the first few months, making sure not to buy anything that couldn't be covered by your savings. But, as no bills turn up anywhere even after contacting several banks and payment processors, you're convinced that the card is magic and truly infinite.

You gradually start buying more exorbitant things, usually by pointing them out to Sofia and telling how 'totally awesome' they would be, which Sofia without fail agrees to. Soon you're living in a giant pink beachside fortress in Northern California, built to accommodate Sofia's stupendous girth. Sofia wears custom-tailored clothes and takes surprisingly good care of her pomeranian, which she has named Priscilla.

You take up the habit of routinely cumming into a silo, which can then be emptied to sate Sofia's cock thirst. Her midnight dicksucking rampages are becoming more seldom. She's likely never going to ascend further, because no cock can reach her pussy, not even yours, and you have the longest penis on Earth that can get fully erect. She instead uses a repurposed hydraulic press to get herself off.

Understandably, Sofia has become somewhat of a sex symbol, and you yourself too, to a lesser extent. If you had capitalized on the ensuing sex tourism, even by running a souvenir shop, you could've covered the costs of Sofia's living without her Gold Card. None the matter, you figure. This makes everything easier.

Despite all this, you just can't get over how vapid Sofia is. She is about as interesting to talk to as a brick wall, and as dense as one too. You think that maybe, somehow underneath that mountain of flesh is still the original Sophie, struggling to get out, but all of her thoughts and words are stifled by Sofia's tits.

ENDING 90 -Sofie's Goldy Card-