Mardi Gras, Fat Tuesday, Shrove Tuesday or Fastnacht Day, it makes no difference what you call today. It is the last day before the strict Lenten Fast for many Catholics and Protestants beginning on Ash Wednesday. Millions or perhaps even billions of doughnuts will be made and sold to use up all the old fat according to custom. It is associated with a carnival atmosphere with drinking, dancing and partying in many areas of the world. Fastnacht is a German term meaning "eve before the fast".