Floyd Mayweather doesn't think COVID-19 can give him his first loss -- at least judging by the way the boxer was PARTYING on Saturday in Arizona.
Floyd hit up the International Boutique Nightclub (aka INTL) in Scottsdale ... which was PACKED with people!!!
No masks. No gloves. No social distancing.
And apparently, no worries from Floyd and his crew ... who're smiling and dancing in their own private VIP section.
The video is shocking considering we're still in the middle of the coronavirus pandemic.
Of course, Arizona had allowed restaurants to reopen their dining rooms on May 11 -- but we didn't know nightclubs were part of the plan too!