In a large bowl or container, mix together the orange juice concentrate, lemonade concentrate, pineapple juice, sugar, tea, and whiskey. Transfer to shallow bowls or dishes, and freeze overnight.
Remove the frozen mixture from the freezer and let stand for about 10 minutes. Chop with a wire whisk or potato masher to make a slushy consistency. Place scoops of the frozen slush into glasses, and top off with the lemon-lime flavored soda.
