(Video) Floyd Mayweather's Dad Fell On His Ass On Stage At Pre-Fight Dance Party

Mayweather Sr. fell down this weekend at least! Floyd's father fell HARD during a pre-fight concert.

Floyd Mayweather Sr. got up onstage and did his best James Brown impression to the tune of "Sex Machine" at the Fiesta Rancho Casino in Las Vegas on Thursday.

But while he was lettin' loose, he lost his footing and went crashing down to the dance floor.

The good news like a true pro, the 62-year-old got back right up and continued to dance even busting out the signature James Brown "Camel Walk" dance move.

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