From The Boys' and Girls' Little Book of Alcohol, an eBook available at iBooks, amazon, or barnesandnoble.com:
The Brass Monkey
1 part dark rum
1 part Absolut
2 parts orange juice
Pour the ingredients into a shaker filled with ice, and after shaking it just enough to chill it, pour the contents into the pre-chilled glass of your choice. This drink shouldn’t be served on the rocks. Note: the original (some might call it “real”) recipe contains much more OJ. It’s boring. My version is a lot more fun.