p.s. no fatties

I am pretty observant with others' conversations. I am not trying to be nosy, I just have a natural reception to what others say. Of course though when I need to be, I can't pay attention to save my life. Yesterday morning, I was preparing my coffee in my work's lounge. There were two coworkers in there with me and lady #1 is preparing a cheese sandwich. Lady #2 is stirring in hot water into her oatmeal but does not take her eyes off Lady #1's sandwich.
Lady #1: "WOuld you like a piece of my sandwich?"
Lady #2: "No thank you, I don't eat anything with fat in it?"
I am the last person to judge anyone based on their appearance, but seriously, how much can you avoid fat in your diet? I also wanted to chime in, "Really? B/c it doesn't look like you don't eat fat." But of course, that is just me without my morning caffeine. I pretty much obliterated any chance of diet in my life. I stopped caring and if I crave something sweet or greasy, I allow myself to do so. So I will probably gain a good 30 pounds this year.