TYSON FURY called Jake Paul a w ****r’ as the rivalry between Tommy, his brother, and the American heats up.
The social media battle will take place in Tampa on December 18, with Britain's WBC heavyweight champion in Tommy's corner.
YouTuber Paul believes Tyson and his fighting family have grossly underestimated Paul.
Fury had previously praised Paul for his promotion of professional boxing, but he retracted on that to slam Fury.
Fury, 33 years old, stated that it was good entertainment. It's two young men putting their all on the line, and somebody's O must go.
"Poor Jake Paul is about to be severely knocked out.
"Jake has not done anything. A few months back I thought he was great, but now I think he is a w *****.".
Paul spoke from a Puerto Rico swimming-pool with a sombrero, sunglasses and said: "Tommy! You're sparring bums."
Free Bets: Get more than PS2,000 in NEW CUSTOMER DEALS"We started camp two month before these so-called professionals.
"They underestimate me to the greatest degree, they can't teach him what he requires."
"Tyson is trying coaching him, but he can't teach him what a champion requires."
John Fury, the leading figure in the industry, came up with an alternative nickname for the Instagram star. He shouted: "You're with the big dogs now, so be careful not to get bitten."
"You are Catweasel. I can see fear in your eyes. Take your sunglasses off, so I can see it. There is fear now.
Tyson laughed after hearing Paul insult him.
"I am here being abused by some p***y.