"The Russian Sleep Experiment" (also referred to as "Orange Soda") is the name of an Internet horror story and urban legend – a Creepypasta – written by an unknown author. It tells the tale of five test subjects being exposed to an experimental sleep-inhibiting stimulant in a Soviet-era scientific experiment. Plot The story takes place at a facility in the Soviet Union in the 1940s. In a military-sanctioned scientific experiment, a group of researchers put five political prisoners in a sealed gas chamber where an airborne stimulant is continually administered, with the intent of keeping the five subjects awake for 30 days. The subjects behave normally during the initial days, with the subjects talking to each other and whispering to the researchers. One day, one of the subjects starts screaming uncontrollably, while the others prevent the researchers from looking inside by pasting torn book pages and feces on porthole windows and one-way mirrors. A few days pass without the researchers being able to look inside, during which the chamber is completely silent. The researchers use the intercom to test if the subjects are...