I used to eat a lot of popcorn when I was younger (like 12 or 13) and didn't know any better...but I was a kid and in so many sports I just burned everything right off so it didn't matter.
That's better than the lady @ the office where I worked for the summer who is always talking about how she wants to lose weight (widest chair butt I've EVER seen) but brings in Dunkn' Donuts every morning, drinks that new Pepsi that has "lower" calories/carbs, and munches on Skittles and other candy or chips all day. OH but wait, she eats salad for lunch, so that must be ok, right?