h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

Two distinct regional foods. Originating in the southern section of the North American Continent (often known as Central America), the taco was a combination of meat, cheese and local vegetation wrapped either in a soft corn based disk known as a 'tortilla' or cradled in the same disk after the disk has been fried (and therefore hardened) into a U shaped cup.
The second variation was developed in the northern section of North America. Reputedly the ingredients are the same, however, through clever processing and manipulation of the base elements a strange variant was achieved. Despite similar ingredients, and almost identical appearance, the Northern taco is by far the deadlier variety. Some have accused the various vendors of the Northern Taco of substituting "alternative" ingredients for meat and cheese, but we must point out that our tests where inconclusive on this matter. (In truth we suspect our testing equipment must be faulty, the meat and cheese ingredients of the Northern Tacos seemed to be completely inorganic in our tests which, of course, is absurd.)
This researcher highly recommends both varieties of Tacos on a limited basis, but for the staple diet I still recommend a steady intake of "Pizza" and "French Fries" with the occaisional "Hamburger with Cheese".