Mix the sugar and water together to make a syrup, allow to cool down. Crush the watermelon in a food processor, and strain out the seeds. Mix the watermelon, syrup and vodka and freeze in a shallow tupperware box. Break up with a fork as soon as it sets, and every half hour after that.

Per serving: 2441 Calories (kcal); 15g Total Fat; (5% calories from fat); 21g Protein; 581g Carbohydrate; 0mg Cholesterol; 83mg Sodium Food Exchanges: 0 Grain(Starch); 0 Lean Meat; 0 Vegetable; 17 Fruit; 0 Fat; 22 1/2 Other Carbohydrates