I was at a local pub with friends. There was an obese woman at our table, who ordered a poutine as a snack and talked about how the following day she had a bacon date with her friend. As she explained it, she and her friend like to get together and eat bacon.
Everyone around the table's eyes went big. We were all thinking "OMG," because it was clear that this woman's eating habits were destroying her health.
Of course, no one said anything, because what do you say. We're all taught to mind our own business, and it's probably just as well. Sometimes it's better to avoid confrontation then to try to prevent a train wreck.