3 tablespoons corn syrup
1/4 teaspoons red food coloring
20 ounces pineapple juice
1 can (15 ounces) cream of coconut
1/2 cup heavy cream 1 cup orange juice
10 ounces good-quality rum
For the "blood": Pour corn syrup into a small bowl, then dip a toothpick into the food coloring, stirring a very small amount into the syrup. Dip and coat the rim of the glass into the syrup, and allow the "blood" to drip down the glasses' sides.
For the drink: Whisk juice, cream of coconut, heavy cream, orange juice, and rum together before placing into a blender with 2 1/2 cups of ice. Blend until smooth.