1 1/2 oz of Orange Juice
1/2 oz of creme de almond (or almond liqueur)
1/2 oz of Triple Sec
1/2 oz of 151 proof rum (or overproof rum)
1 1/2 oz of sweet and sour mix
1 oz of Light Rum
Shake all ingredients (except 151 proof rum) with ice and strain into a collins glass over ice cubes. Float the 151 proof rum on top, add a cherry (if desired), and serve.