Many proponents of "thin privilege" also make claims that there are no adverse effects of being extremely overweight or obese.
Friend: omg THIN PRIVILEGE!!!!
400-lber: Fat is a feminist issue! I can't help that I'm fat they're oppressing meeeee!! Oh hey pass the chips.
Fat girl: What? How dare you say that?!! THIN PRIVILEGE RACIST!!! There's nothing I can do about it, this is my body type! *Wolfs down a Big Mac.*
Doctor: How did you get a hamburger in here? Nevermind; did you know that about 100 years ago, obesity was very rare? Fast forward three or four generations. People live increasingly sedentary lifestyles, eat more, and the food they eat is higher in fat, cholesterol, and sodium. You're saying this is all a coincidence?
Fat girl: What do you know about science and medicine? I have a random article that proves I'm right! YOU CAN'T HANDLE MUH CURVES!!!
#2: Thin privilege is seeing a new doctor for non-weight-related issues, and not having to prepare, in advance, a long list of arguments and facts to present if your weight turns out to be the only thing they are willing to discuss.
#3: Thin privilege is not having your body type publicly humiliated in television shows like The Biggest Loser.