1 1/4 oz of coconut rum
1 1/4 oz of pineapple rum
6 oz of lemonade
1/2 oz of sprite soda
1/2 oz of grenadine syrup
1/2 oz of simple syrup
Combine lemonade, sprite, grenadine, simple syrup, and ice in a blender (should end up looking like a pink slush). Pour into a pina-colada glass. Add the rums and serve.