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 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 often a neighborhood event or welcoming party, normally held during the summer. Ice cream socials are a traditional gathering dating back to the 18th century in North America. The first ice cream social in America was in 1744, when Maryland governor Thomas Bladen served ice cream for a dinner party. The first ice cream social in the White House was in 1802 with the 3rd U.S. president, Thomas