Einstein’s: Sign up and Get a BOGO Twisted Sandwich Coupon February 6, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Click here to sign up and get a coupon for BOGO FREE Twisted Bagel Sandwichs from Einstein Bagel. The coupon is emailed to you after you sign up. You can also get a printable version of this coupon courtesy of Smart Couponing! Thanks, SwagGrabber!