December 8, 2010 No Comments Free Breakfast on a Bun at Whataburger on Thursday from 6-10AM Print out the coupon and redeem for free Breakfast on a Bun at Whataburger on Thursday, December 9, 2010 from 6-10AM. Locations. Free Breakfast on a Bun at Whataburger on Thursday from 6-10AM – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.