Combine 1 tin of fruit cocktail, 1 cup of cut grapes, and 1 cup of watermelon pieces in a large pitcher.
Add pudding nata de coco to the mixture and stir well.
Pour in 2 cups of condensed milk (adjust sweetness as needed) and 2 cans of coconut milk. Mix thoroughly.
If using whipping cream, add it now; otherwise, use vanilla ice cream instead for a different texture.
Add some strawberries for garnish if desired.
Stir the mixture until well combined and the colors are nicely mixed.
Serve over ice cubes.