December 14, 2010 No Comments Free Whatachick’n Sandwich at Whataburger on Wednesday Print out the coupon and redeem for a free Whatachick’n Sandwich at Whataburger. Coupon valid only on December 15, 2010 from 4-9PM. Locations. Free Whatachick’n Sandwich at Whataburger on Wednesday – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.