1 1/2 oz of Midori melon liqueur (or watermelon liqueur)
1 1/2 oz of peach schnapps
1 1/2 oz of Orange Juice
6 oz of 7-up soda (or Sprite)
Fill 1/3 of a cocktail shaker with ice. Add Midori, peach schnapps, and orange juice. Shake until well chilled and pour into highball glass. Fill glass with cold 7-Up. Add an orange slice on top.