Fatshion is hard to make sense of, but it's apparently supposed to be a bag. Also, notice how Plastic isn't wearing a fatkini.  Must be the "thin privilege is relative" thing TiTP keeps telling us about, wherein obese people who are less obese than other obese people are still guilty of thin privilege because they can access things the bigger deathfats can't.  Like plus-size swimwear that isn't a fatkini.