The rolls under my arm getting thick enough that my arms rest at a wider angle. And then those rolls joining on my back. And then those rolls growing another roll beneath them...

I typically have to make that call myself. But, I was stopped from sitting in one of those flimsy metal lawn chairs once. Not only was I too heavy, but probably too wide. I would've gotten stuck.

I know I've said it on here before, but I managed to warp an army bed. I actually did damage to every bed I had in college through sheer weight.

I also get these Fiji visits. Almost half of my notifs are Fijis visiting my profile.

For me, I would guess somewhere in the 500s is where I'd have to be sitting most of the time. 600s for not doing housework, even occasionally. So I'd say somewhere in there.

I had manboobs really bad when I was younger, enough to actually be tight in shirts along with my belly. But as I've gotten a bit older and having to lift heavy stuff, they've shrunk. Of course, my belly also grew a lot more, so maybe not...

Okay then.
Seeing as the initial post is now gone, have you ever broken a bed frame?
I for one managed to severely bend an old iron bed in college, and very nearly broke two steel tube ones in college.
These days I use a mattress on a foundation on the floor, but even that has a snapped board...

I'm fairly certain I've said this before, but if you're tall, 7 almost comes with 6. Cars, booths, and clothes don't fit if you're 6'3" and have a hard time bending over.
That being said, even with some weight lost, 7.

I had this problem too, but a couple rooms had bolted-in, cheap plastic seats. My fat ass probably irreparably bent three of those. I couldn't use the foldout desk at all.

Ok, this going to sound crazy, but put on more weight. I had some rashiness when I was about 300-330? And now I'm about 400 and haven't had rash for quite awhile.
I also wear boxer briefs tucked under the belly, which helps.