Awesome! BOGO FREE Shake Printable Coupon! May 21, 2016 by Coupon Printer Post contains sponsored/affiliate links and I get commissions for purchases made from links. Check out this BOGO Free Printable Coupon from Steak N’Shake! This coupon is valid on the new Black Raspberry Chocolate Chip shake ONLY! Head to the location nearest you and try it out!