The example you gave really shows that food behaviour is social behaviour. When you go to the movies, you do not necessarily think of drinking a big glass of water. When you go to the movies, you usually end up buying popcorn and a soft drink. They go together. It is important to point out that the food we eat varies depending on the occasion. A lot of it is based on social, emotional or family factors. It is important to point that out.
On March 1st, 2011. See this statement in context.