Floyd Mayweather kept his composure at the start of his press conference with Conor McGregor ahead of their August 26 fight, but the champion boxer let loose when it was his turn to hit the podium.

Floyd took jabs at McGregor, calling him "Mr. Tapout," adding that he "likes to quit." Mayweather then added that he's sure McGregor will go out in the fight, either on his back or his face.

Check out the full clip above.