Well, they're all pretty fat too, but they've been concerned since around the time I passed 400 or when I grew my big back rolls, putting me past 5XL of certain brands. I'm definitely the fattest of the family now, by an ever-widening margin.

Ate fast food four times today, totalling over 6000 calories. Feeling soo stuffed.

I go to my local Burger King at least once a week. I think they've caught on that I'm not buying two meals for two people.

I keep shirts and things I really like. I've got stuff 3 or 4 sizes too small. Helps remind me how large I am.

I ate over 3300 calories of fast food today. So maybe I'm addicted. 🤔

There are suspenders designed to go under the shirt. That's what I'm going to go for if/when I outgrow my belt in a few inches.

I wear over my belly. I'm too tall to not; if I did, my shirt would never cover my gut. If you're going to buy larger pants, make sure they have a low rise.

Good old fashion cursed gift. Something like, a spurned sister, cousin, coworker, etc., gives protag a giant ugly sweater for Christmas. Protag grows fat enough to outgrow the sweater, extended family commenting on appetite and weight as they blow up.
Could be a reality shifting tale also, all the family oblivious to the new weight while protag and gift giver being aware.

I got very big into counting my calories when I started here. By the thousands. Now I just count the burgers.
BK is routinely the most calorific in terms of average meals, btw.

I thought this said disgusting at first.
Anyway, try talking differently than you typically do. If you're normally loud and clear, be soft and smoky. If you're normally soft, be stern.
Most hypnosis videos I've seen also depend on some kind of distorted ambience.
All in all, also realize the likelihood of recognition IRL is very small from something faceless online.