Today, July 25, 2014, is National Hot Fudge Sundae Day. The sundae is a sweet ice cream dessert. It typically consists of one or more scoops of ice cream topped with sauce or syrup, and in some cases other toppings. It is generally accepted that the spelling "sundae" derives from the English word Sunday, or from the German Sonntag, which means Sunday. This may come from the belief that a special treat such as sundae is usually eaten on weekends. Various American localities have claimed to be the birthplace of the ice cream sundae. Above link has more info.
