To remember just how good a roast beef sandwich can be, visit Old Original Nick's Roast Beef, where they've been carving sandwiches since 1938. There's no secret recipe — just the perfect cut of beef that's wrapped in a thick layer of fat and roasted. To help you sound like a pro, here's a handy guide to ordering lingo. (We suggest an overboard combo with some outs.) Overboard: extra gravy. Combo: with cheese. Operation: some bread scooped from roll. Outs: little crispy bits from the outside of the roast. Dunked: very messy?the whole sandwich is dunked in gravy.