Someone had cut open the box with, um, a boxcutter probably, removed the cereal bag, put the cereal into a new bag, and stuffed it back inside. The cut was placed so that it still seemed sealed on the shelf -- I didn't notice until I went to open it.
The bag still had cereal inside, but I was scared to eat it, so I just threw it away. Does anyone know any legitimate reason that someone would have done this? All I can think of is poison or anthrax spores. If it was anthrax spores I'm probably doomed since I opened the bag. x.x