1 (15 ounce) can sliced pineapple, drained
1 (16 ounce) can frozen lemonade concentrate
1 (16 ounce) can frozen Orange Juice concentrate
1 (3.4 ounce) can frozen lemonade concentrate
1 (5 ounce) can sliced grapefruit
1 (8 ounce) can frozen whipped topping, thawed
Ice cubes
In a blender, combine pineapple, lemonade concentrate, orange juice concentrate, lemonade concentrate and grapefruit. Blend until smooth. Pour into glasses and serve.