Before partying with his pals and posing with fans, the UFC ace said: 'I'm going to have a drink and celebrate. Once a -2250 favorite, according to OddsShark, Mayweather has seen his odds drop to -550.
"I think that was totally disrespectful", Mayweather said.
In a sit-down interview with ESPN, Mayweather addressed McGregor's comments and said that his August 26 showdown will be "for all the blacks around the world". Mayweather last fought in September 2015, easily beating Andre Berto by unanimous decision; McGregor beat Eddie Alvarez via TKO at UFC 205 in November.
The undefeated 40-year-old boxer, who has come out of retirement to take on the Irish mixed martial artist, said his age had been catching up with him in training. But McGregor's specific remarks - asking Mayweather to "dance for me boy" and referring to a group of African-American fighters in the movie "Rocky III" as "dancing monkeys" - received the most negative press.
The MMA master said: "I am proud to announce my 2 year residency with @WynnNightlife!"
"When you look at myself and Conor McGregor on paper, he's taller, has a longer reach, he's a bigger man from top to bottom", Mayweather told Smith. A fighter like Andre Berto isn't even supposed to go the distance with Floyd Mayweather. Who do you think will be victorious, do you think the fight will go the distance?
Mayweather isn't amongst that group and is adamant his upcoming opponent knew what he was saying. Something has taken a toll on my career ... Thirty fights into his pro career, his knockout ratio was at 70 percent.
"It wasn't a one-sided spar either way but I thought one was the clear victor overall and that was Conor".
Mayweather, however, emphasized that he believes an "older" Mayweather still reigns supreme against McGregor, telling Smith, "I didn't say I couldn't fight".
Billed as the "fight of the century" it just didn't live up, nor could have in reality - to that type of hype at least.