Floyd Mayweather Calls Conor McGregor A Bitch!

Floyd Mayweather just upped the ante in his beef with Conor McGregor ... calling him one of the most disrespectful words out there ... a "bitch."

Mayweather hit up Instagram Live ... and ripped into the UFC star, saying "Conor McGregor's a bitch."

Floyd didn't stop there ... he also posted video of C.M. getting choked out by Nate Diaz ... and offered 10 Gs to the person who comes up with the "best caption" for the video.

These latest shots come on the heels of Floyd saying he'd "slap the s***" out of McGregor.

Your move, Conor.