By TMZ

Trainer Floyd Mayweather Sr. says he doesn't see anything racist about Conor McGregor telling his son to "dance for me, boy" during the news conference in Los Angeles... despite outrage on social media.

"Racist? I don't know what that got to do with race," Floyd Sr. told TMZ Sports moments after the news conference at Staples Center. "This is a boxing match. I don't know what that got to do with no racists."

Of course, referring to a black man as "boy" in America has an extremely negative history that goes all the way back to slavery. Conor did ... but Floyd Sr. is clearly giving him a pass.

McGregor has vowed to knock Mayweather out inside four rounds when the pair meet in a Las Vegas boxing match next month.

McGregor has never boxed as an amateur or professionally but will face undefeated former multiple world champion Mayweather at the T-Mobile Arena on August 26 under normal boxing rules.

However, the 28-year-old Irishman is confident he can achieve something which proved beyond the likes of Manny Pacquiao, Saul Alvarez and Oscar de la Hoya and beat the American.

Speaking at the first stop of a four-city media tour which will also take in Toronto, New York and London over the coming days, McGregor said on a Showtime live stream: “I am honoured to be here, to give you this spectacle. His little legs, his little core, his little head, I am going to knock him out inside four rounds, mark my words.

“I am a young, confident, happy man that has worked extremely hard for this. I am just up here embracing everything. No-one can do anything to me. I am just enjoying myself and having a good time.

“He will be unconsciousness in four rounds. He has never faced this. I don’t fear him. All these rules, all these restrictions, it doesn’t faze me; it amuses me. It is funny to me all these rules. All I need is a gum shield. Line me up to the ring and I am good to go.”