Boil:

2 c. water
2 c. sugar

Then cool.

Add:

12 oz. can concentrate orange juice
12 oz. can concentrate lemonade
46 oz. can pineapple/grapefruit juice
1 c. vodka

Freeze for 24 hours or longer. Divide into smaller containers to help freeze quicker.

To serve: 1/2 slush and 1/2 warm diet Sprite.