Floyd Mayweather isn't gonna let Conor McGregor "retire" without taking a few shots at the guy on the way out.
... especially with all the crap Conor has been talking about Floyd lately!
Remember, it was just back in May that Conor told Mike Tyson, "I will beat Floyd. I promise my life on it."
Tyson had been praising McGregor as a "bad motherf**ker" for going 10 rounds with Floyd in their 2017 fight -- and McGregor responded on social media.
"Thank you Mike, and just know that for the inevitable rematch, with the knowledge I now hold of Floyd’s style, plus under the tutelage of my old school boxing coach, I will crack the puzzle, and I will beat Floyd.