Lynne841:
A longtime fantasy from my teenage years, born of insecurity and mayhaps some guilt for the social sin of admiring fat and someday know how it feels to be fat... like a dream come true. Although deep down we all know fat is fat and it doesn't matter how or why, haters gonna hate.
A common theme of stories I'd read on Dimensions at the time. Something about being hidden away and fattened against my will would make it ok that I'd been forced to double my weight. Eating myself into a coma to meet increasing daily quotas or be fed extra through a funnel, until one day my captor didn't bother locking the trapdoor. Got stuck attempting to escape and forced to eat extra as punishment. Weighing myself every morning and coming to terms as I gained over a hundred pounds.
Eventually, months later was found safe and (round) in an abandoned turret. The trapdoor entry had to be cut open into a gaping hole and I barley squeezed down the spiral stairs. People would be so relieved and nobody would care I weighed nearly 300 pounds, it wasn't my fault. Unbeknownst to them I loved the new me and continued to get fatter, just couldn't help myself.
If you haven't written a story with this as the outcome, go for it! You've got the imagery down perfectly.