I'm discovering this. Most will initially say, "Oh you shouldn't mock them, it actually makes them feel bad so they eat more blah blah blah." But after a few more fatty jokes they'll start agreeing with you. Slowly but surely they realize that every fatty they know is selfish and weak. They take too much food, too many sick days, they don't share, they complain, they're needy and entitled, they want to be attractive but put no effort into themselves.