Conor McGregor has rubbished reports that he was caught up in a brawl in a Crumlin pub with a relative of a senior Kinahan cartel member.
The UFC champion said, "It's all b*****ks" as he left court after being fined €400 for speeding.
The former plumber turned up at Blanchardstown District Court yesterday afternoon after being compelled to by the judge.
'Notorious' was due to appear in the morning but sent a solicitor to handle the case in his absence.
He was charged with exceeding the 100kph limit on the N7 Naas Road at Rathcoole on March 31.
At a previous hearing, Judge Miriam Walsh said that if any defendant wanted to make an argument, that person must attend court themselves or send a legal representative.
Solicitor Graham Kenny said McGregor was pleading guilty.
He said that, when his client returned the fixed penalty notice issued to him, he had neglected to put his middle name, Anthony, on it.
But Judge Walsh said that if McGregor wanted to offer mitigation or make a case he "has to be here".
"I'm getting nothing but fingers from Mr McGregor. If he wants to make a case he has to be here," she said.
"This is absolute disrespect to the court," she added, saying a "bench warrant will be coming his way" is he did not turn up.
Mr Kenny said he would call McGregor at once.
Judge Walsh told Mr Kenny to "tell him of my ire" and put the case back to second calling.
McGregor arrived at the court in a 2016 BMW i8 sports car worth around €150,000 and wearing a green Adidas tracksuit.
He spent some time in a consultation room with his solicitor and a friend before appearing in court.
Garda William Dempsey told the court he had detected McGregor doing 158kmh in a 100kmh area on the Naas Road. A fixed penalty notice was issued to him but not paid.
McGregor took the stand and said "good afternoon" to judge Walsh.
The judge asked if he had heard the evidence of the speed he was accused of doing, and he replied: "I can't remember to be honest but I tried my best to pay it. I don't know why it didn't pay."
Mr Kenny said his client was submitting a guilty plea, which the judge said she would accept.
"As is my normal question in relation to the fine, I have to ask you a question, how much do you earn? And don't tell me you earn €110m in one day," she said to laughter from McGregor and the court.
"Well, 140," McGregor replied.
Judge Walsh then fined McGregor €400 and gave him two months to pay, adding that he could "pay by instalments".
She told him that, despite his good fortune in life, he should take cognisance of other road users and reduce his speed.
"Yes, I apologise for that. I wanted to show my respect by showing up here today, and I apologise. I'll pay the fine, thank you," he replied.
McGregor pulled up his hood on the way out of court.
Asked about recent accusations that he had been involved in a fight in a pub, he replied: "It's all b*****ks" and "I thought I was in bleedin' Lanzarote".
He then went to the Beacon Hotel in Sandyford for lunch.
McGregor took to Instagram to post a series of pictures relating to his court appearance, including one of him posing with his solicitor and another of his BMW with the hashtag #relaxjudge.
Earlier this week, the UFC star made a bizarre display of defiance after being linked to the pub brawl.
Also on Instagram, he referred to himself as "the celebrity" in an apparent reference to newspaper reports of a row in a Crumlin bar involving a relative of a senior cartel criminal.
Gardai have received no complaint and are not investigating the incident.
The alleged victim of Sunday night's assault is a relative of Graham 'The Wig' Whelan, a highly secretive criminal who has been involved in organised crime for two decades.