Liquid nitrogen evaporates, and can cause violent oxidation of organic material. Ingestion of liquid nitrogen can cause severe internal damage, due to freezing of the tissues which come in contact with it and to the volume of gaseous nitrogen evolved as the liquid is warmed by body heat. In 1997, a physics student demonstrating the Leidenfrost effect by holding liquid nitrogen in his mouth accidentally swallowed the substance, resulting in near-fatal injuries. This was apparently the first case in medical literature of liquid nitrogen ingestion. In 2012, a young woman in England had her stomach removed after ingesting a cocktail made with
Ice cream social Jefferson. When ice cream became more common to the public in the 1800s, organizations such as schools and churches started hosting ice cream socials. Churches frequently organized ice cream socials since the 1860s, fashioned after the "ice cream gardens" that were common in society at the time. Today, ice cream socials still take place in government and upper class, but have spread to all classes and different organizations. Ice cream social An ice cream social (also known as an ice cream party) is a planned event the primary focus of which is ice cream served to the guests. It is