Foreign foods brought to America lose something in the translation. We all know that the signature dish of pizza is available nowhere in Italy — only at American chain restaurants with tacky plywood "leaning towers" — and it was only on arriving on American shores that Cambodian chefs acquired the freedom to invite their diners to try the Pol Pot Pie. Taco Bell is an example of Mexican food served everywhere in the U.S. — and nowhere in Mexico — except, lately, at Taco Bells. Mexican Taco Bells exclusively serve tourists from the U.S. who blame their first bout of Montezuma's Revenge on that charming hole-in-the-wall food stand with uncovered sauce bowls, and will want something safer for the rest of their week abroad.