1 1/2 oz of Triple Sec
1 1/2 oz of 151 proof rum (or overproof rum)
2 oz of Tequila
2 oz of sweet and sour mix
1 oz of Lime Juice
Combine all ingredients except 151 rum in a cocktail shaker and shake briskly. Pour over ice in a margarita glass, and add 151 over the top. Add a slice of orange, and serve..