Can a food become a sandwich simply by calling itself a sandwich? Does an open-faced sandwich constitute a sandwich, despite the lack of sandwiching employed in its construction? If so, is bruschetta a sandwich? Buttered toast? Pizza? What if you fold the pizza in half? Must the unifying exterior item be split in two in order to constitute a sandwich? Is a hot dog a sandwich? A submarine roll split in the middle, but with a hinge still hanging on? Is an omelete a sandwich? A note on methodology: Is it necessary to consume the sandwich with one's own two hands? If one were to douse a sandwich in gravy, would it neutralize the sandwich, converting it into nothing more than a bread-based entree? If we'll accept a hinge in a sandwich, what about a filling that's encased on two sides? On all sides? Is a kolache a sandwich? A pasty? A corn dog? A calzone? An egg roll? A dumpling? A pop tart? Is a wrap a sandwich? Is a burrito a sandwich?