Update: It looks like the coupon that is being offered now is a FREE milk with a $100 grocery purchase.
Yay! This is back. You can score a Free 1/2 gallon of Chocolate Milk when you buy 1 gallon of white milk. If you did it before you can do it again.
To get your coupon you are entering a chance to win free milk for a year. That would be a cool prize.