First thing you need to know about twerking is that it is not new. In fact, it's about as old as Miley herself. The term, which is an amalgam of "twist" and "jerk," emerged from New Orlean's Bounce music scene where the dance was namedropped in songs like "Do The Jubilee All" from 1993. It's widely considered the first recorded reference as Jubilee chants "Twerk baby, twerk baby, twerk, twerk, twerk." Two years later, Cheeky Blakk released the song "Twerk Something," the first with twerk in the title.
By Y2K, the bounce scene's dance had migrated down to Atlanta where the Ying Yang Twins, hot off the success of "Get Low" with Lil Jon decided to get their Disney on with "Whistle While You Twurk."