The Deal: For the whole month, all Shake Shack customers who donates $2 or more to No Kid Hungry can get a complimentary shake on their next visit. This is the third year for the "Great American Shake Sale."
When: The whole month of May 2014
Where: All Shake Shacks except for stadiums, airports, and international locations. Locally, there's one in Chestnut Hill and one in Harvard Square.
Link: A video about the 3rd Annual Great American Shake Sale
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