For those unaware that they're actually grossly overweight, they need fat truthing. For those that know it, fat shame. A w\e post. http://metro.co.uk/2015/01/28/chef-lost-21-stone-after-friend-text-him-fat-f-every-day-for-six-weeks-5040205/ Sure fat shaming is mean/rude/efficient... But most of all it works (at least sometimes, the other times are when the person is just bound to fail no matter what).