Some Twitter users were not pleased when UFC lightweight champion Conor McGregor said, “dance for me, boy” at their first press conference Los Angeles Tuesday at the Staples Centre. The two are on a world tour promoting their Aug. 26 Las Vegas fight.

McGregor continued to slam Mayweather. I’m absolutely honored to be here before you, to give you this great spectacle. And somebody’s zero has got to go! He’s in a f------ tracksuit! He can’t even afford a suit anymore,” he said. “I’m going to knock him out inside four rounds, mark my words.”

READ: WATCH: Floyd Mayweather Says How Conor McGregor Could Beat Him In Boxing

Even though McGregor is not an experienced boxer like Mayweather, who has a perfect record, he wasn’t scared to take on the champion. “As far as the fight ... he will be unconscious inside four rounds. The movement, the power, the ferociousness — he’s not experienced this. He’s fought people who have shied away from him,” he said. “I don’t fear him. I don’t fear this limited set of fighting. This is a limited set of rules that makes this half a fight, a quarter of a fight. This isn’t a true fight. If this was a true fight, it wouldn’t even take one round.”

But the biggest problem Twitter users had with McGregor’s words was when he told Mayweather to dance.

While other people were offended, Mayweather’s father was unbothered. “Racist? I don't know what that got to do with race,” he told TMZ after the press conference Tuesday. “This is a boxing match. I don't know what that got to do with no racists.”

Even though Mayweather’s father didn’t see it as racist, referring to a black man as “boy” has an offensive past in America that goes back to slavery.

McGregor might be confident he will knock Mayweather out, but the boxer didn’t share the same sentiment during an interview with TMZ in May. “I've been off for a couple years and I'm 40 years old now. So, I'm a lot older and he's still in his 20s and I'm in my 40s now,” he said. “So that could play a major key, we don't know. And he's a heavy hitter.”

READ: Dana White Slams Rumor About Floyd Mayweather vs. Conor McGregor Deal

Mayweather also noted that boxing and MMA are two different sports. “I respect MMA. That’s the one thing I do. You can’t disrespect MMA, you have to respect it. It’s a contact sport. It’s a brutal sport” he said. “I take my hat off to all those guys in MMA who go out there and compete.”

At one point in the interview, he even seemed to praise his future opponent. “Conor McGregor is the 2nd biggest name in MMA,” he said. “So, I'm not gonna sit right here and knock Conor McGregor. He's gone out there and done what he's had to do. It's obvious he's done something right thus far to get to the point where he's at.”

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