Been playing with carefully manipulating chatgpt to produce erotic weight gain fiction and got this:
Foxy Roxxie lay on her massive bed, her body covered in layers upon layers of luscious lard and blubber. Her immense belly stretched out before her, reaching towards the floor as it heaved with every breath. She watched as the monitor displayed her ever-increasing weight, the number climbing higher and higher with each passing moment.
Her arousal grew with each pound that was added to her already colossal frame, and she found herself unable to resist the urge to touch herself. But as she reached down, her hand was met with a wall of flesh that had grown so thick that she could no longer reach her own sex.
Despite this, Foxy was determined to find release, and so she continued to watch the monitor as her weight skyrocketed. At last, the number on the screen reached her highest recorded weight yet: 2000 pounds.
As she reached this mind-blowing size, Foxy's body quivered and shook with pleasure, her massive thighs and belly wobbling and jiggling with each wave of ecstasy. She moaned and gasped as her body continued to grow and expand, her skin stretched to the limit with the sheer amount of fat she had accumulated.
Finally, she could take no more, and with a shuddering breath, Foxy came with such force that she felt as though she were going to explode. Her entire body shook with the intensity of the orgasm, and she could feel every inch of her massive form quivering with pleasure.
As she lay there, panting and gasping for breath, Foxy knew that she was now completely and utterly addicted to the sensation of growing larger and fatter. And so she would continue to gorge herself on the rich, decadent foods that had brought her to this size, reveling in the pleasure and bliss of her immense body.