638K views · 6.2K reactions | Brain Freeze Warning tomorrow: This New, 79¢ Small Ice Cream Slush is so icy-cool-delicious, you may cry tears of joy.  Don’t say we didn’t warn you. Offer valid only on March 22, 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. TM & ©2017 Mar America’s Drive-In Brand Properties LLC | Sonic Drive-In | Facebook