Do n't use the `` F '' word on final days of `` Fat Talk Free Week '' Banned are phrases like , `` Does this make my butt look fat? Professor : If you do n't like your body , you 're more likely to treat it badly .
Do n't use the `` F '' word on final days of `` Fat Talk Free Week '' Banned are phrases like , `` Does this make my butt look big '' Campaign is aimed at ending negative body images and the thin obsession . Professor : If you do n't like your body , you 're more likely to treat it badly .