Tyson Fury has been bombarding Jake Paul with private voice messages as the YouTuber prepares for his bout against Tyson's younger brother Tommy.
And, as you can probably imagine, the messages are absolutely hilarious.
Even prior to their boxing match being announced, there has already been plenty of trash-talk between the Paul and Fury camps.
While some of the insults have been lighthearted as of late, you can tell the beef is real and there's a deep-seated dislike between the two combatants.
Well, now they finally get to settle their differences inside the ring and Tommy has wasted no time in recruiting his big brother and current heavyweight champion of the world Tyson Fury.
But while Tyson has been hands-on in training Tommy inside the ring, it seems he's also engaging in some mental warfare outside of it too, exchanging personal voice notes with his brother's opponent.
Speaking to TMZ, Paul played just one of the many messages he's received from 'The Gypsy King' himself.
In the recording, Tyson is heard yelling: "Jakey Boy, you're getting annihilated, Jakey!"
Usually one to fire right back, Paul couldn't help but laugh and soak in the fact the one of the biggest sports starts on the planet is trash-talking him.
"It's amazing, bro," Paul said.
"You can't hate the guy. Tyson, I love, I want to make that clear for everybody. I love Tyson, I love that he's involves, he's a great entertainer but unfortunately I have to end his brother's career, that's just the way it is.
"But Tyson, we can still be friends still bro, it's all good."
Paul currently boasts a professional record of 4-0, while Fury in undefeated in his seven bouts.
With Fury actually being a real boxer, it's no secret that this is Paul's toughest test to date.
That said, you could also make the argument that Paul is Fury's toughest test to date too, judging by the records of the Brit's last seven opponents.
Not just that, but the pressure is mounting on Fury to derail the Jake Paul hype train with threats of moving to a desert island, changing his name and possibly even retiring all being thrown in his direction if he loses.
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