“I saw Sally in the butchers the other day.” “Oh yes.” “Yes, she’s really piling on the pounds.” “I noticed that. She told me that her doctor said that she had an underactive thyroid.” “Ha, and overactive knife and fork if you ask me.” “Yes, you are probably right.” “I am right. I’ve seen her in the sweet shop buying bars of chocolate. You know, those giant bars, not the little ones.” “Well, I suppose eating lots of choco...