National Cotton Candy Day is celebrated on December 7 to our sweet tooth’s joy and our dentists’ dismay. But did you know dentists actually invented it in the first place? It was even called fairy floss back in the day. Now, it’s the go-to at county fairs and a must-have when riding a Ferris wheel. Most of our childhood memories wouldn’t have been complete without the sugary cloud that is cotton candy. Read on to discover its history — as well as how to celebrate one of the sweetest days of the year.