Depends
....if they are morbidly obese..then I wonder how someone could let themselves get that way (but this is just me...I can understand how people can become fat and even obese..I have an obese grandma....but morbidly obese, [not trying to be judgmental..it is just in my nature to figure out how something happened, I am a curious person!]
.....if they are just fat, I put my hand around my waist because...surprise...I am self-conscious about my weight or more-so my stomach)
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Go die in a ditch if you're a b*tch, if you're a jerk, go to work, if you're just mean, flee the scene, and if you're rude, go ahead and intrude because you're probably just like me.