1. Boil the sugar with the cups of water in a large saucepan for 3 minutes. Allow to cool.
2. Mash the bananas in a blender and combine with the can of water, orange juice, lemonade, pineapple juice, and bananas in a large bowl. Add sugar syrup; blend well.
3. Freeze the mixture for at least 24 hours. Remove from freezer 1 hour before serving. Using a fork, break frozen punch into smaller pieces. Add ginger ale. Continue blending until slushy. Serve in punch cup's. (50 servings.)