One-Off Story Idea: Magic/Curse (maybe for october) (Patreon)

I've had an idea for a story for a long time.  Once upon a time, I was watching The Matrix Reloaded, and there is that one scene...  This one:

https://www.youtube.com/watch?v=aQn9L-wkq_c

The lady eats the cake and it makes her experience an orgasm.

My idea for a story involves a curse, or a magic spell or something that causes a thin and pretty protagonist to experience and orgasm from eating-overeating, literally stuffing herself to her limit makes her climax. 

She doesn't want to get fat, maybe she is even a model, but she can't resist eating because of the pleasure.

Any interest in a one-off story like this in October?  Also if you've got ideas that could help flesh out mine, please let me know.

No pdf, this time, this is just an idea.  No outline or draft yet.