Afrojack dropped a sick banger Wednesday in Miami ... and by that, we mean he fell off stage and banged his head on concrete.
Afro got a little too turnt up while spraying people with champagne at the Dim Mak Beach Party alongside Steve Aoki ... and fell into the crowd face first.
Bad month to be a DJ -- first Tiesto's hospitalized after hitting his head on a giant LED ... now Afrojack is falling off the stage.
Afrojack tells TMZ, "You know what you do. When you fall off the horse, you get back on!!'
Watch your back Calvin Harris.