Dairy Queen has an awesome sale on Blizzards this week. From April 19th to April 25th you will be able to buy one Blizzard at the regular price and receive the second for 25¢. It appears that you do not need a coupon for this nationally recognized event. It is always a good idea to call your store ahead of time to see if they are participating.
I had an Oreo Cheesequake Blizzard last week and I was in love. Unfortunately the scale reflected it. But I am not sure I can pass on this deal!