Betcha' y'al think that Donut Day was something dreamt up by Krispy Kreme or some other donut company.
In fact is wan't any food company, or any other business. It was the Salvation Army who 80 years ago initiated Donut Day in honor of the Doughnut Girls who served treats to our soldiers during WW1. In case anyone doesn't get the connection, the soldiers of WW1 were called Doughboys, a term that originated during then Mexican-American War of 1846.
But that;s not all. There are tax implications as well as some additions to the list. To find out more, here is the article from Forbes,
https://www.forbes.com/sites/kellyphillipserb/2018/06/01/free-doughnuts-and-a-side-of-sales-tax-trivia-on-national-doughnut-day/#68d8172f65c7