Why is it ok to call people skinny but not fat?

[.]

Its rude. You shouldn't be pointing out someone's fat or skinny. It just doesn't do anything good. I mean that's why there's people who have weight problems and can't stop thinking about their weight

[Lea]

Social media & hollywood are trying to say that skinny women are more attractive, have less problems, & can do many things & have more chances & are winners.
but fat women are losers, are unlucky, face many problems & are unattractive.

In cartoons & films, good & normal characters are skinny, but bad characters are sometimes fat.

Some jobs need women to be skinny, but no job tells women to be fat.
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That's why.

[niceincome486]

That's a good question.
It's probably because we people made it bad.
For example before you could call afro-americans nigers but because of the way we used these words they became inappropriate for use.