Captain Cake:
Mine is definitely to have an fa/feeder who feeds me up until my buried penis is too engulfed in fat for sex. And then humiliatingly, she forces me to use a strap on instead as she reminds me that I'll never be able to penetrate her without one again.
OMG this is right up my alley. Switch her to him.

Add begging, HOPING AND PRAYING, I can still be "found" under all my blubber...and pleasured if I've eaten enough for their liking for the day.
Also, holy cow, new kink, reading all of these posts as I eat is a real turn on, too! You people have some really HOT ideas!!