And to that, Paul doesn't have any inhibition of firing back at the mixed martial arts star. And he's doing it ahead of his fight against McGregor protege Dillon Danis on Oct. 14, live on DAZN.

"I'd like to see him attempt to slap the nose off my face," Paul told Misfits Boxing in an interview posted Friday.

Then came a heap of scathing insults toward "Notorious" and a caveat toward the Irish sensation.

"Conor McGregor is an average MMA fighter and a horrible boxer," Paul added bluntly.

"I'm going to beat the s—t out of his b—h Dillon and then I'm going to beat the s—t out of him."

Paul tacked on: "But he ghosts me, bro. He won't even bet a million [dollars] on his fighter. That's chump change for a guy like Conor. He won't even bet a million on Dillon.

"He had nothing to say when I called him out on Twitter. So you think he's going to step in there himself? I don't know. It feels unlikely."