That's a good point about their internalized shame.  They feel shame because they know it's wrong to be a fucking lazy glutton. They'd just like it if everyone ignored the 800-pound (hehe) gorilla in the room as they waddle around wheezing and stuffing their pudgy faces.  That's why when they try to shame normal people for whatever bullshit they're pissed about (societal beauty standards, patriarchy, etc.) it just doesn't have the desired effect.  I don't feel shame because the way I live isn't shameful.  Fat fucks feel shame because the way they live is.