On: Group behavior: Girl Starts A Dance Party

Seems staged to me. It seems unnatural how those 4 people started dancing at exactly the same time and at the same beat at the first wave.

Ps. This is similar to an event where a guy started a dance party http://www.youtube.com/watch?v=GA8z7f7a2Pk

Damn it: I don't understand why this submission went [dead] two times.