Fun Fact: May 19th is National Devil's Food Cake Day in the United States, a day to indulge in the tasty chocolate cake that is rich, moist, and layered with delicious chocolate-flavored frosting. 😈by johnataylor on TwosFun Fact: May 19th is National Devil's Food Cake Day in the United States, a day to indulge in the tasty chocolate cake that is rich, moist, and layered with delicious chocolate-flavored frosting. 😈