Cereaiously?
Is it possible they began selling cereal boxes at the movies, and we never noticed? It is more likely that this group of pals decided they’d had enough popcorn and wanted to start a new movie-watching trend. They even included the light with their own hands.
Cereal may be a tasty treat, but it’s illegal to take food from the theater with you. They provide a wider selection of snacks at the theaters, and bringing outside food – and leaving it strewn about on the floor like this – is horrible conduct.