Free Shake At Wayback Burgers On Today (June 21st)

Free Shake At Wayback Burgers On Today (June 21st)

Get a FREE Black & White Milkshake at Wayback Burgers on Friday, June 21. No purchase necessary. FREE Black & White Milkshake (no purchase necessary) at all participating restaurants all day Friday, June 21, 2019, while supplies last.