en.wikipedia.org)
The Harlem Shake is an Internet phenomenon based on viral videos that began to gain popularity in February 2013.[1] The videos are featuring the song Harlem Shake by electronic musician Baauer, not to be confused with the original Harlem Shake[2]. Normally, each video begins with one person (often masked) dancing to the song alone, surrounded by other people going about their business without paying attention to the dancing individual. When the bass drops, the camera transitions to the entire crowd doing the dance, often appearing scantily clad.
Manner of the videos resembles another viral video shot on Gamle Bridge[v 2] in 2012.
Numerous commenters have compared the Harlem shake to the outgoing Gangnam Style