Fatphobic and stereotypical. Every single word that comes out of the fat friends mouth is about food or fat club and its actually embarrassing. She's also portrayed to be stupid, which is another trope films use for fat people.
Putting it down to hopefully being because the show is old, but it's such a negative stereotype and made it hard to watch. Once you notice you can't stop, you could literally play a drinking game every time she is eating, mentions food or has a food related conversation. Other than that it was an OK show