There's a very small window that we have on the ground level that rests between unawareness of one's obesity, and the other end of delusion. Within that tiny space (as if anything is tiny with hams) is the one point where fat-shaming works wonders. Too soon, and the person doesn't think it applies to them; too late, and they know it does, but are so deep in the bubble that they plug their ears to it.