Krispy Kreme giving away dozen donuts for free, if you buy a dozen

Glazed doughnuts roll by on a conveyer belt at a Krispy Kreme store in Charlotte, N.C., Thursday, Dec. 6, 2007. (AP Photo/Chuck Burton)

This Saturday, Krispy Kreme is giving away a dozen donuts for free if you buy a dozen.

It's called 12-12 Day of the Dozens.

The best part is the coupon - it's an ad in which the glaze forms a barcode that stores will scan off of your smartphone. They're calling it "The World's Tastiest Coupon."

Click here to learn more about their special promotion.
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