December 22, 2010 No Comments Free Whataburger at Whataburger on Thursday from 11AM-3PM Print out the coupon and redeem for a free Whataburger at Whataburger on Thursday from 11AM-3PM. Coupon valid only on December 23, 2010. Locations. Free Whataburger at Whataburger on Thursday from 11AM-3PM – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.