1 (46 ounce) can unsweetened pineapple juice
1 (32 ounce) bottle ginger ale
1 (16 ounce) can frozen lemonade
1 (16 ounce) can frozen orange juice
2 1/2 cups seagrams 7 whiskey or other whiskey
3 (2 liter) bottles 7-up, chilled

1. Mix all ingredients except for the 7-up together and freeze overnight.
2. To serve, fill a glass half full with slush and top off with 7-Up.
3. To make a non-alcoholic version, simply omit the whiskey.
4. Cooking time is freezing time.

I am tossing in a link for drug rehab just in case anyone at your party needs to be committed to one. Happy partying!