There was some last words McGregor told Mayweather the last time the two will see each other before the first bell.

Floyd Mayweather came out wearing Irish bookmakers Paddy Power on his boxer shorts and straight away McGregor went on the verbal attack.

As Mayweather was weighing in – it could be just about heard off camera a certain Conor McGregor shouting at Mayweather:

“Your’re too soft boy! Your’re too soft. Too soft b***.”

In the face off he then added:

“You little short a** b****! You ain’t got s*** on me you little short a** b****. I could kill you stone dead. Know that.”

There was more after this, but it couldn’t be made out exactly.

Luckily Showtime commentator Jim Grey asked McGregor what words were exchanged after to which McGregor replied:

“That’s the worst shape I’ve ever seen him in. He looks blown out, out of shape. I’m going to breeze through him. Trust me on that.”

McGregor is expected to come in as heavy as 170lbs tonight by the time of the first bell after re-hydrating from yesterday’s weigh in.

That could give the Irishman upwards of 16-18lbs in weight advantage over Mayweather by the opening bell.

The fight is expected at the latest to start at 9pm local time in Las Vegas at the T-Mobile Arena.