Psy The Genital-Thrusting NEW Dance Move

9/11/2012 3:20 PM PDT

He's ridden the horse ... he's stomped the ground ... and now Korean pop sensation Psy is busting out a BRAND NEW dance move ... that requires a whole lotta crotch-thrusting.

Psy -- the genius behind the mega-hit "Gangnam Style" -- danced his face off on "TMZ Live" ... and previewed some new steps that could be the next big dance craze.

He even got Harvey to get down on the action ... who managed to awkwardly twitch his way through the steps without any sciatica pain (ok, maybe a little sciatica pain).