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FREE Shake w/ Burger Or Hot Dog PurchaseNo Longer AvailableExpired: Apr 11, 2018 12:09pm | Comments 0
For a limited time, Sonic is offering a FREE small classic shake when you buy a Sonic Cheeseburger or Footlong Quarter Pound Coney – no coupon is needed. This promo cannot be combined with any other offers and is valid at participating locations only. Mention the offer when ordering.
You can also get a Free Medium Slush when you download the SONIC App and create an account.