1/4 oz of Dark rum
1 dash of 151 proof rum (or overproof rum)
1/4 oz of Malibu coconut rum (or Coconut Rum)
1/4 oz of dekuyper razzmatazz liqueur
1 dash of 7-up soda (or Sprite)
2-3 oz of Orange Juice
1 splash of grenadine syrup
2-3 oz of Pineapple Juice
Combine liquors into a large shaker, add the orange juice, the pineapple juice, the grenadine and a spritz of 7-Up. Shake well and strain over ice in a highball glass. Float a dash of 151 rum on top.