  Another thing I thought about "Super-Size Me"... I think I was so shocked by the size of things because fastfood companies never do any sense of scale in their ads.Their "product shots" never include hands, or other recognizable objects like usual product shots.
This convention is used in all product photography, from cars to electronics to furniture. In the fastfood industry, they may show different sizes of things next to each other, but (to my knowledge) I have never seen an ad with a person holding up a coke or some fries. It would look ridiculous. People may be eating the food, but you don't really know what it is they are eating exactly. They definitely are not eating the super-sized portions. This adds more weight to the argument that the fastfood industry knows they are doing harm to people. Or at least pushing a ridiculous, useless product. 
