With some of them, sure. Maybe ten years ago, every one of them. Nowadays, you can't have any opinion on fat chicks if it's negative. PlUs-SiZeD iS bEaUtIfUl horseshit is surrounding us. They spew it constantly now.
BuT wHaT aBoUt BiG MeN? What about big men? You think I like them because they are dudes. I'm not in the best shape myself but I'm not fat. Take some care of yourself. There is nothing wrong with being a little bigger it you need it to. I've always agreed with healthy > skinny. It just so happens that 99% of the time healthy = skinny. for some people and how their bodies work, chubby = healthy. But in no way is morbidly obese = healthy.
It's best to do it with something you know they can't change. It's not like they don't do it to us. They pick on our height, we make fun of their tit sizes. They made fun of our jawlines, we make something up out the blue and they will believe it. It is because they are so self-centered that the moment you mention anything about them not being a sparkling perfect angel dipped in pixie dust and marshmallows, they break down. Mention their nose being fat or hands being huge. Give them a taste of their own medicine. Let them know what we've had to deal with our entire lives.