2 12-oz. cans frozen lemonade
2 12-oz. cans water
1 6-oz. can frozen limeade
3 pts. strawberries, mashed
1 750 ml. bottle light rum
1 2 liter bottle 7-Up

Mix all ingredients together and freeze, stirring 3 or 4 times during the first 6 hours; the mixture will remain slushy. Serve as is or liquify in the microwave.