I'm going in small steps, but I'd love to have a belly hang that can flop onto a sink, even when I'm not bloated. Someday, I might really like to be 250 lbs or so, but again I'm taking this in steps.
Less realistic, I'd like to grow a belly that touches the floor when I'm on all fours -- though this last bit is more fantasy and I probably wouldn't want to go that far, just because I actually like getting out and traveling, etc.
But definitely having a belly hang is a huge turn on.
Fat for me is a size and shape, not so much a number. I want my gut to hang low enough to bounce off my thighs when I walk. That is probably my number 1 goal. Its hanging low already, but I expect it will take at least another 100 lbs or more to get to where I want to be.