Cheap-o horror movies usually on Sci-Fi and lined on the new release shelves of Hollywood Video that are o so fun and entertaining to watch. They are defined as having unnecessary and unrealistic amounts of gore, usually some sort of genetically mutated creature (Wasps, bats, locusts) or zombies, are super predictable, and have only one or 2 survivors. The actual term "Snack Central" comes from all the people who get eaten due to their unbelievable stupidity.
You'll probably say stuff like "Do they want to get eaten?" and "Why are these people so stupid?" throughout the movie.

to tell someone to calm down and relax.