I don't know if this is exactly what the OP is looking for, but there was one interaction I had with a couple at a bar a few years ago that kind of made me wonder and think.
She was kind of chubby/curvy, though not very large by any means, but her boyfriend was quite fat. And they seemed to be talking about restaurants a good bit.
The woman didn't really say so in so many words, but I got some sort of vibe almost as if she thought I needed to eat more. Granted, that was probably around 50 lbs ago for me, and I never saw them again. I don't know what would happen if she were to see me now, and if she were to remember me.
Both of them were also quite drunk, which of course a double edged sword. While some might end up saying things they might only think but would never say in person under ordinary circumstances, at the same time I kind of think being drunk is a bit of a truth serum which I actually appreciate. Either way, I'm reluctant to read into that too much.
Still, it kind of makes me wonder a bit. Was she a feeder, or an FA? Was her boyfriend always a large man, or did he gain a substantial amount of weight since they started dating? If the way she was talking was any indication, I'd say it's quite possible the latter took place, though not necessarily.
Perhaps a better idea might be to mention food, either just randomly or even when the context isn't necessarily related to food at all.
For example, if you're at a bowling alley or arcade, I expect they might have pizza, nachos, hot dogs, etc. something that's relatively high in calories. Maybe suggest getting some.
If you watch a movie, either at a theater or even at home, suggest snacks.
If you're shopping and running errands, maybe suggest more snacks or getting something from the drive-through just because, even when it's not really one of the main meal times.
If and when you do go out to eat, suggest appetizers and dessert.
You can maybe try to gauge the kind of reactions you get. All sort of little ways that you might be able to suss it out a bit, without being really weird. Just don't be really pushy and push it into being weird.
1 week