It started in New Orleans back in the 90's. Back then it was just called 'Bouncing.' Its spread like wild fires over America. You've seen it in the clubs, its an uncontrollable urge to shake ya rump, when you hear a good bounce song. Its called 'Twerking.' Its almost hypnotic to watch the booty bounce up and down. Check out this girl that is addicted to Twerking. LOL!

If you needed to know the definition of 'Twerking' here you go!

Twerking :  The act of moving/ shaking ones a**/buns/bottom/buttocks/bum-bum in a circular, up-and-down, and side-to-side motion.Basically a  dance. derived from strip clubs. When a girls' a** moves like a bowl of Jell-O. - Urban Dictionary

Juvenile - Back that thing up  is the song that made Twerking spread across America. Comment below if you started Twerking as soon as you pressed play. LOL!