A reaction video , or a react video ,[1] is a video in which one or more persons react to something. Videos showing the emotional reactions, criticism or commentary of people viewing movies, television series episodes, film trailers, music videos, news, or other media are numerous and popular on online video hosting services such as YouTube and liv... See more

Commenting on the phenomenon, Sam Anderson described it as encapsulating the "fundamental experience of the Internet" in that it involved watching screens on which people watched screens, in a potentially infinite regression.[4] The first reaction videos for the gross-out 2 Girls 1 Cup allowed people, according to Anderson, to "experience its... See more