If you are using real coconut, crack that sucker open now and gather up the juice. If you are not, then just take your coconut water out of the fridge... :)
Fill a glass with ice. First add the rum and malibu. Next add the coconut water, pineapple juice and squeeze in the lime juice. Give it a good stir.
Top it off with club soda and serve!
Notes
We used real coconut water for fun but if you don't have any coconut handy you can always use Del Monte pineapple coconut water. Or Zico pure coconut water.