Frappé

½ gallon vanilla ice cream, softened
½ gallon pineapple sherbet, softened
2 liter bottle Sprite or 7-Up

In a very large bowl, use a potato masher to mash ice cream and sherbet together, until well mixed. Slowly add Sprite, stirring gently with a whisk until slushy. Serve immediately.

Variation: Use lime or orange sherbet instead of pineapple.