A viral video is a video that becomes popular through a viral process of Internet sharing, typically through video-sharing websites, social media, and email.
Viral videos often contain humorous content and include televised comedy sketches, such as The Lonely Island’s “Lazy Sunday” and “Dick in a Box”, Numa Numa videos, The Evolution of Dance, Chocolate Rain on YouTube; and web-only productions such as I Got a Crush… on Obama.
Some eyewitness events have also been caught on video and have “gone viral” such as the Battle at Kruger. More recently, the Kony 2012 video by Invisible Children, Inc. became the most viral video in history with over 34,000,000 views on the first day of its upload on 5 March 2012 and now has over 100,000,000 views as of late 2013. Another recent example is Gangnam Style by PSY.
As of June 2014, the music video has been viewed over 2 billion times on YouTube, which in turn makes it the most viewed video in the history of the site.