Are you saying it is OK to make fun of obese people?
Oh, gosh, NO! I wouldn't ever make jokes about someone who's so big they show up on radar... or who leaves footprints in concrete- dry concrete... or someone who's so big they have their own area code... who's so big they had to have their baby pictures taken by satellite... you mean, people who are so big others jog around them for exercise?
Jeez, why would I ever be such a non-PC, insensitive, unfeeling person? Maybe I should go take some PC lessons from a liberal, so I can learn how to be mentally deranged too! It's obviously worked out well for you.