Case in point, a Moscow man was hospitalized recently after taking a shot which contained un-evaporated liquid nitrogen at an office holiday party, per Baza, a Russian-language online publication. According to Baza, a celebrity chef was using liquid nitrogen as part of a “cryo-show,” which included fancy cocktails and shots flash-chilled with the stuff. As poor Sergei discovered, liquid nitrogen is extremely dangerous to consume. With a boiling point of −196 °C, liquid nitrogen expands rapidly into a massive amount of gas when exposed to room temperatures. The first recorded case of liquid nitrogen ingestion came in 1997, when a physics student in Massachusetts swallowed the stuff during a lab demonstration.