Caramel Popcorn Balls

2 cups light brown sugar, packed
1 stick butter
1 cup light corn syrup
1 can sweetened condensed milk
3 quarts popped popcorn

Bring brown sugar, butter, and syrup to a boil; add 1 can sweetened condensed milk. Continue to boil for about 3 minutes, stirring constantly because it will burn easily. Pour over popcorn. Greese hands and shape into balls. Especially good when you haven't just had your wisdom teeth out and can chew!