i can say, from my experience and understandings, i aprove of this article and say it is true.
i know a girl who is very skinny, she is of a smaller build but shes skinny and i joke around with her. she always eats little oil, always calls her self fat all the time, and even does exercise. so i asked her 'you think your fat?' she said yes, then i said 'what would you do if i called you fat?' i think she said shed kill me lol. but her best friend is a more larger person, so maybe she is always aware of her.