Floyd Mayweather is on an all-out offensive against Conor McGregor. The boxer recently took to Instagram to slam McGregor and even posted a video offering $10,000 to the best caption. He himself put up this caption on the video: “49-0 vs. Connor the Notorious Quitter.”

CAPTION THIS! Best caption wins $10,000.00. The winner will be announced on Monday, Dec 19. Stay tuned ! #TMT

A video posted by Floyd Mayweather (@floydmayweather) on Dec 14, 2016 at 8:51pm PST

Mayweather didn’t just stop here. He also went on to call the UFC star Conor McTapout, a not so subtle way to remind McGregor of the UFC 196 fight with Nate Diaz which he lost in March. He further said this: “I’m gonna slap the shit out of McGregor when I see him.”

Conor Mcgregor, who obtained a boxing license in California recently, is taking a break and will not return to the Octagon before May. Mayweather, who retired from boxing with a 49-0 pro record, is in no mood to directly challenge McGregor no matter how thrilling that fight might be. Till something of that sort comes up, you can try your hand at this caption contest. We think this one should be good enough – ‘49-0 v Conor McChicken-Gregor’. What say?