The song, entitled 'Hit Em With The Draco', starts with a promise to beat Chris Brown with a knockout punch when they meet in the ring at the MGM Grand Hotel in Las Vegas in March.
"Aye 50 Cent what you talking about?" Soulja says in the intro. "You made all that money off Vitamin Water and then filed for bankruptcy. You know I'mma knock Chris Brown out when I see him."
Later in the track, Soulja Boy fires multiple threats at both Brown and 50 Cent.
"50 Cent - he know about me, everybody know I'mma get to the cake. You on the block, I'mma hit you with the draco, you know that I put it in they face.
"Stand in the box, I jab, I jab - I'mma knock out Chris Brown. Lot of money on my neck, riding round with a cheque."