On July 13, 2012 visit your favorite Chick-fil-A Restaurant dressed like a cow and get a free meal. My family has done this for years. It is so much fun hanging out watching for people who didn’t know about this special event.
They offer a FREE printable costume at their website if you prefer not to make your own.
From Chick-fil-A:
Join us July 13, 2012 at your favorite Chick-fil-A Restaurant!
For one day only, black and white spots, cow bells and furry ears will be appropriate attire at Chick-fil-A restaurants all across the nation. In celebration of July 13, Cow Appreciation Day (an unofficial yet nationally recognized holiday), Chick-fil-A will award a FREE Meal (breakfast, lunch or dinner) to any customer who comes to one of our 1,600+ restaurants fully dressed as a cow.
http://www.chick-fil-a.com/Cows/Appreciation-Day