Even better than BOGO Milkshakes at Sonic is Buy One Get One Later! That means you can Buy One Milkshake and get your FREE Milkshake then or save that one for another trip!
Sonic will be doing this through June 27th!
Click the photo above or see below for the details:
Buy One, Get One Free Anytime offer ends June 27, 2010. Buy one shake at regular price (plus tax), get one free shake of equal or lesser value now or receive a coupon for a free shake for a future visit. Coupon expires July 15, 2010. Includes Cream Pie shakes and malts where available. Add-ins cost extra. Please mention and present coupon when ordering. Limit one free shake per coupon. One coupon per visit. Not good in conjunction with any other offers. No cash value. Copies, sale, or Internet distribution or auction prohibited. For a limited time only at participating SONIC® Drive-Ins. TM & ©May and June 2010 America's Drive-In Brand Properties LLC.