SONIC Drive-In is shaking things up again! For a limited time, the fast-food chain is giving customers a FREE small Classic Shake with the purchase of a single-patty SONIC cheeseburger or Footlong Quarter Pound Coney at participating locations.
Its classic shakes are hand-mixed with real ice cream — available in fresh banana, caramel, chocolate, strawberry, vanilla, hot fudge and peanut butter.
The deal makes us long for its annual summer nights half-price shakes special. How many days until Memorial Day?