The term 'HALF A RUM DRINK' can be summarized by the three letter acronym MAI, which stands for a Mai Tai cocktail. A Mai Tai is a tropical drink made with rum, orange curacao, orgeat syrup, and lime juice. It is served over crushed ice and garnished with a mint sprig and a slice of pineapple. The drink is traditionally served in a double old-fashioned glass, but can also be served in a tall glass. When served as a half a rum drink, it is usually served in a smaller glass.