"Sign your end Floyd or you are just a mouth."
There has been plenty of back-and-forth and Conor McGregor continued the taunts as he urged Floyd Mayweather Jr. to hurry up and commit to the mega-fight.
UFC champion McGregor has agreed a deal to step into the boxing ring with Mayweather, who is set to come out of retirement to face the outspoken Irishman.
While legendary American Mayweather - who boasted a flawless 49-0 professional record before retiring in 2015 - is close to signing on, McGregor is tired of waiting.
Whether McGregor can match Mayweather - one of the greatest pound-for-pound boxers in the history of the sport - remains to be seen but the UFC icon does not look out of place away from the octagon.