I have the opposite feeling if the person is a stranger. I think to myself, "I'm so large people can't help but say something." I must have a gravitational pull.
Now if it's especially negative from people I somewhat know, that's when I feel embarrassed.

I'm in a similar boat. I have to reach up and over my gut, and my fupa pushes it down further. If I was a few inches bigger, I'd probably have to work at it.

In high school and college, every summer I would lay around and eat, sometimes up to 5 meals a day. Naturally, I never noticed just how much fatter I was getting until school, where I couldn't fit in desks.
By the time I got out of HS, there was only a few desks in each room I could fit in, the ones extended for beefy football players, or lardasses like me.
College was even worse, because I never stopped eating. Buffet style cafeterias meant I was always putting on the pounds. In several older rooms, I just had to sit at a chair with no desk, or have it be pressed upward by my gut.
I probably put on 50 pounds easily those last two years of college.

I've been too tall (long?) for most tubs for a long time, but the last time I used one, my gut rubbed both sides and my back fat suction-cupped on the back of the tub.

Yes. Unless you mean when you're so heavy your body quakes as walk, thighs pushing up on your stomach.
You'll get there.

I'll be blunt. At my size, it's hard to find any clothes that fit at all. I know online stores carry much larger sizes, but my fat is weirdly distributed, with huge back rolls and a big belly. If I get just a bit fatter, I'll outgrow everything I've got.
Are there any places that actually have roomy sizes at 6XL plus?

I'd say your pleasantly fat, but like noted above, my kink side would want you fatter. Anybody with your rounded-flabby belly shape makes me think that way.

Or you're too wide for a toilet stall, or pushing out on your shower curtain.

Fun size twix, 1 on the first, 24 on the 24th.
Or for a real challenge, regular Snickers.

Being too fat to fit: hot.
Being too fat to get out: not so hot.