National Prime Rib Day gets your mouth watering, and starts you drooling. For just a day forget about the diet. For just today, don't fret over the high fat and cholestrol content. Prime rib refers to the finest beef, with even marbling and a creamy layer of fat. It is generally carried only by the finest butchers. Often, rib roasts masquerade as prime rub in supermarkets, which carry UDA choice, not USDA prime , meats. You can distribute wristbands to your friends and family, so that they do not forget this day.