2 cups seeded musk melon chunks, chilled
2 cups seeded watermelon chunks, chilled
¾ cup pineapple juice, chilled
4 orange or pineapple slices, to decorate
Blend the musk melon, watermelon and pineapple juice in a blender at high speed until smooth.
Pour into individual Margarita glasses.
Fix a slice of orange or pineapple on the rim of each glass and serve immediately.