Is 'fat' really the worst thing a human being can be? Is 'fat' worse than 'vindictive', 'jealous', 'shallow', 'vain', 'boring' or 'cruel'? Not to me.

The quote is questioning if being “fat” is the worst thing that a person can be. The quote suggests that being fat is not worse than other qualities including being vindictive, jealous, shallow, vain, boring, or cruel. In other words, the quote is suggesting that being fat is not the worst thing that a person can be.