1 fifth Rum
1 (6 oz.) can orange juice, undiluted
1 (12 oz.) can lemonade, undiluted
1 (12 oz.) can limeade, undiluted
1/2 c. lemon juice
4 c. water

Combine and freeze for 24 hours. Stir 2 or 3 times while freezing. Scoop out mixture into glasses. 7-Up can be added to make it slushier. Keeps forever in freezer.