The Outkast co-founder was finishing up a rendition of "Bombs Over Baghdad" at Summer Camp Fest in Illinois on Sunday when he jumped up for the big finish, but botched the landing and blew out his left knee.
He shared the above picture on Instagram.
Big Boi was clearly in lots of pain, but sucked it up and mustered the strength to limp off the stage.
Big Boi has since undergone surgery to fix his busted joint, which forced him to postpone several tour dates, but the rapper insists he'll be back on stage in 6 weeks.
Hopefully, we expect him back to His feet.