Guy Fieri requires a beach towel to clean up after this massive sandwich loaded with house-seasoned turkey, corned beef, roast beef and coleslaw! See #DDD, Fridays at 9|8c + sign up for #discoveryplus to stream the whole library and so a lot more:. Get the dish ▶ Register For Food Network ▶ Man Fieri takes a cross-country road trip to check out some of America's classic "oily spoon" restaurants– diners, drive-ins and dives– that have been doing…