I look at the sweatshirt as trying to provoke a kind of "tee hee" empathy. Like this ham wants to make it painfully obvious she's in on what you're probably thinking, i.e. this fat fuck can't stop eating and somehow being self-aware, letting you know she's self-aware, somehow trivializes her planet condition. Fats have this strange belief that drawing attention to their corpulence in an attempt to be funny makes people magically believe they are not fat.