2 oz of Orange Juice
2 oz of Pineapple Juice
1 oz of Malibu coconut rum (or Coconut Rum)
1 oz of Midori melon liqueur (or watermelon liqueur)
Pour the Malibu rum and Midori melon liqueur into a highball glass filled with ice cubes. Top with equal parts of orange and pineapple juice, and serve.