Bring on the brain freezes! WHOOP WHOOP Sonic is back again with another awesome deal. Today you can score half price Shakes and Ice Cream Slushes.
Offer valid only on May 25, 2017, at participating SONIC ® Drive-In restaurants while supplies last. Limit 5. Tax not included. Add-Ins cost extra. This offer cannot be combined with any other offers or discounts.