Free Krispy Kreme Doughnut With Foursquare Check-In

Here's an awesome giveaway if you need something a little sweet -- snag a friend and head over to your closest Krispy Kreme location on either May 15 or May 22, 2013.

When both you and your friend check in at Krispy Kreme on Foursquare, you'll score a free Key Lime doughnut -- choose from either the Key Lime cake or Key Lime cheesecake (mmm!) varieties.

One free doughnut per guest per day while supplies last, and you can check out the full list of participating Krispy Kreme locations here.

I've never tried the Krispy Kreme Key Lime doughnuts before -- if you have, please leave a review in the comments section!