2 cans (12 oz.) lemonade
1 can (12 oz.) limeade
3 tsp. sugar
3 cans (12 oz.) Rum
3 cans crushed ice (or water)
3 cans 7-up
Dash of grenadine (or red food coloring)
1 or 2 cups crushed fruit with juice
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Mix together
Freeze
Stir every 2 or 3 hours for the first ~6 hours
Serve 1/2 or 3/4 slush with 7-up or ginger ale