Easy Popcorn Balls

20 cups plain popped popcorn (3-4 bags)
3/4 cup light corn syrup
1/4 cup butter
2 teaspoons cold water
2 1/2 cups confectioners' sugar
12 large marshmallows

1. In a large saucepan over medium heat combine corn syrup, cold water, confectioners' sugar, and marshmallows. Heat until the mixture comes to a boil, stirring constantly. Add in the popcorn and stir well to coat all of the popcorn.
2. Grease hands with vegetable shortening and shape into balls before it cools. Be careful, it can be HOT!