Conor McGregor is usually known for his foul-mouthed tirades on the microphone but, in his first face-to-face with Floyd Mayweather ahead of their August 26 fight, it was his suit which did the talking.

Axar.az reports citing Independent.

The UFC champion and the boxing legend kicked off their four-night, four-venue press conferences in Los Angeles on Tuesday night with the pair trading endless insults before eventually being separated by Dana White.

However, the biggest insult was subtly hidden in the Irishman’s attire, with the pin-stripes on McGregor’s suit actually containing the words “F**K YOU”.

Clothing was high on McGregor’s insult list after berating his opponent for turning up dressed informally in just a stars and stripes tracksuit.

“He's in a f***ing tracksuit, he can't even afford a suit anymore,” McGregor quipped in response to claims that Mayweather owes millions to the taxman.

The undefeated boxer responded by pulling out a cheque for $100m, in front of the 11,000 fans at the Staples Center in LA.

McGregor also poked fun at Mayweather’s age, as he did when the fight was announced on social media, by dancing around the 40-year-old while he was perched on a stool.

“On August 26, this man will be unconscious, he's too small, he's too frail,” McGregor said.

“I will come out and paint many pictures. I can fight in my styles. I can dazzle him.

“He will be unconscious inside four rounds. He's not experienced this. I don't fear him. This is a limited set of rules that makes this half a fight.”

They will come face-to-face again on Wednesday night in Toronto, before completing the four press conferences with New York on Thursday and London on Friday.