Mayweather: 'I'm gonna slap the s--t out of McGregor'

Floyd Mayweather is not only unconvinced Conor McGregor will ever try his hand at boxing, he's none too pleased with the Irishman uttering his name in public.

The UFC lightweight champion was issued a license to box in California just a few weeks ago, reigniting the war of words between he and the legendary boxer. While McGregor has repeatedly stated he'd fight Mayweather in a boxing match for $100 million, "Money" sees the Irishman's call-outs and teased foray as little more than a dog and pony show.

"I don't fight in California. What did he get a license in California for? ... I'm (going to) tell you like this, he's blowing smoke up everybody's (expletive)," Mayweather said, according to FOX Sports' Nick Schwartz. "He don't really want to fight because I went to his boss. 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 may not buy McGregor's campaign, but that didn't stop him from vowing to slap the UFC superstar if they ever crossed paths.

"I don't give a f--k what night it was, I ain't never taking no L. I'm f--k McGregor up too," Mayweather said via Periscope. "Punk-ass McGregor… I'm gonna slap McGregor. I'm gonna slap the s--t out of McGregor when I see him."

McGregor is still under contract with the UFC, which Mayweather Promotions head Leonard Ellerbe cited as one of the reasons the lightweight champ and the boxer won't ever meet in the ring. UFC boss Dana White recently echoed Ellerbe's stance, bluntly stating McGregor versus Mayweather "ain't happening."