Mixed martial artist and bare-knuckle boxer Mike Perry didn't mince words when talking about Jake Paul, telling TMZ Sports exactly how he felt about him and saying that he's going to "knock the teeth out of his mouth" when the two face off on July 20.

"F--k Jake, bro," Perry said ... "We've never been friends. He's never been cool with me, he wanted to beat me up, and he's a sneaky little snake, and I'm gonna f--king knock the teeth out of his mouth. F--k him. F--k you, Jake. I'll beat your ass, b---h."

Paul was initially supposed to fight legendary ex-heavyweight boxing champion Mike Tyson on July 20, but that bout has been delayed to Nov. 15 due to the latter's medical issues.

Now Perry has stepped in to replace Tyson in the meantime. The 32-year-old currently fights in the middleweight division in the Bare Knuckle Fighting Championship. He also has 22 MMA fights under this belt, going 14-8 lifetime (7-8 UFC).

Perry has fared very well as a bare-knuckle boxer, going 5-0 with three knockouts. So this looks like a tough matchup for Paul, who is clearly going against a fighter who does not like him.

Paul has done well in his own right since turning more of his attention to boxing, though, going 9-1 in the ring. He has wins over some notable ex-MMA stars, including Anderson Silva and Nate Diaz.