*Perhaps one's meal is of such consistency as renders it akin to, say, chewing gum?
*Suppose one suffers from some malaise that precludes proper digestion of normally edible substances?
*Conversely, suppose a peculiar condition produces the ability to utilize indigestibles, thereby making it possible to eat food wrappings/containers, etc as well as regular food?
There are so many possibilities!
Boggles the mind, doesn't it?
=)