Floyd Mayweather and Conor McGregor:
Two decorated fighters (They'd each tell you they're the best in their sport's history.) who are almost as famous for their trash-talk outside the ring as for their punishing performances in it.
Recently, Mayweather and McGregor have become embroiled in a rivalry that's either a result of intense mutual dislike, or a brilliant marketing gimmick.
McGregor claims he wants to fight Mayweather in the ring, and that he'd win, obviously, but Mayweather isn't buying it.
So naturally, the Money Man has taken his beef to the venue where he does his best fighting: social media.
In the clip below, Mayweather goes off on McGregor, outlining what he plans to do to the outspoken UFC champ next time they meet.
"I ain't never taking no L," Mayweather tells the camera.
"Where punk ass McGregor? I'ma slap the shit out of McGregor when I see him."
Not as brutal as when 50 Cent challenged Mayweather to read one page of a Harry Potter book, but still pretty harsh.
I a recent Periscope, Mayweather accused McGregor of using his name as a promotional tool:
"I'ma tell you like this, he's blowing smoke up everybody's ass. He don't really want to fight because I went to his boss," Mayweather said.
"He don't really want to fight. He's just doing that to keep his name alive, you know what I'm saying, to stay relevant. He don't really want to fight."
"He's doing that building his followers, but he's smart."
Mayweather is undefeated (a claim McGregor can't make) fighting against actual boxers, so yes, the smart move on McGregor's part would be to NOT step in the ring with Floyd.
Check out Mayweather's master class in taunting below: