Strawberry Watermelon Slushies

2 cups cubed seeded watermelon
1 pint fresh strawberries, halved
1/3 cup granulated sugar
1/3 cup lemon juice
2 cups ice cubes

Combine the first four ingredients in a blender; process until smooth. Gradually add ice, blending until slushy. Serve immediately.

Yield: 5 cups