
Seriously though, I know once it's made into a polymer it's inedible, but some corn-derived products aren't. Ever seen corn starch packing peanuts? Edible. They just dissolve in your mouth. Not the tastiest things in the world, but dip 'em in some ketchup and they're better than many of the super-processed snack foods available today.
(Yes, I've done this. I used to do it to freak out customers when I worked at B. Dalton books a long time ago. Not with the ketchup though - just snack on 'em right out of the boxes of new books.)