Floyd Mayweather just poured gasoline on his fiery war of words with arch-nemesis Conor McGregor by posting a vicious diss video on Instagram.
The retired former pound-for-pound boxing king's clip shows bloody footage of the UFC superstar he dubs "The Notorious Quitter" tapping out to Nate Diaz.
Mayweather is even offering $10,000 to the Instagram user who can write the best caption for the diabolically-edited video, which you can watch here:
The London Sun reports:
Mayweather's video showed Diaz pummelling a helpless McGregor before locking him in a rear naked choke hold at UFC 196 in March.
The song in the background repeats the phrase "tap-out" and McGregor tapping Diaz's arm to signal the end of the fight is played repeatedly.
There is then film featuring Mayweather posing triumphantly before a photo of him laughing and pointing.
A message at the end of the film reads: "49-0 vs Connor The Notorious Quitter."
It's probable Mayweather intentionally spelt McGregor's forename wrong.
The American has previously laughed off claims he could square up to the Irishman in the ring - who is currently on a break from UFC after announcing he is to become a dad.
He is also to appear in Game of Thrones with a scrap between the two remaining just a possibility.
Your move, Conor.