1 oz of Dark rum
1/2 oz of creme de bananes (or banana liqueur)
1 oz of Pineapple Juice
1 oz of Orange Juice
1 tsp of grenadine syrup
1 oz of Malibu coconut rum (or Coconut Rum)
1 oz of grapefruit juice
Pour all ingredients into a cocktail shaker half-filled with ice cubes. Shake and strain into a collins glass almost filled with ice cubes, and serve.