Grab your ingredients:
(for a mocktail or kid friendly version sub pineapple juice for the alcohol)
First remove the top of your watermelon and scoop out the flesh.
Next combine your ingredients in the blender, this is a drink you can make to suit your personal taste by adding more/less of each ingredient. I used 1 cup of watermelon, 1 cup frozen pineapple, 1 ounce vodka and 1 ounce coconut rum
Finally pour your drink into the empty watermelon shell and enjoy.
If you are making a non-alcoholic, kid friendly, pregnancy friendly version add in some club soda after you have poured the mixture into the watermelon shell.