"Not a feedee, BUT..." Fantaisies list :
"feedee" that let me fatten them because they know a weight shift spell to force me to become their feedee when they give me back all the weight I piled on them.
Someone or something way stronger than me deciding for me that morbid obesity would suit me better.
Being trated as a food disposal unit and forcibly engorged on greasy leftovers in the backroom of a restaurant.
Being possessed by something that takes control and make me eat like a sow and fatten me, while I'm still aware and can only watch myself feed my body to obesity.
Being secretly fattened by a feeder who learned I'm one too, and want to be better than me. Once they reveal themselves I'm already defeated, fat, addicted to food, and humiliated enough to surrender into becoming their fat pet.
Getting unexpectedly instant wg, especially during sex, or with accepting one little treat from someone, or burp-kissed.
Trying to demonstrate the use of a trough for my future feedee only for them to forcibly keep my head in the food until I finish it all, assuming complete control from now on.
Getting everything provided for me forever to do whatever I want, by a super rich feeder, as long as my weight is always going up and I'm free on planned moments for the mistress or master to assess just how much their pet is doing and have their way in any ways they see fit. Basically signing the rest of my life to a weird fattening retirement plan with the means and free time to do what I want.
Being worshipped as a queen or goddess without a care in the world, but having the duty to represent the wealth of my people by plumping up on offerings.