Welcome to "Grown Men on Horses Without Shirts" ... starring Floyd Mayweather.
Remind you of anyone? Us too ...
The boxing superstar saddled up for a topless ride on the beach (unclear which beach) -- while rockin' a pair of denim jorts and pink socks.
It's definitely a fashion statement -- just not sure what he's trying to say.
One thing we do know ... Putin's gonna LOVE it!