He was set to appear at the Blanchardstown District Court this morning but didn't show up at hte start.
The judge said: "I would warn, however, despite your fortune in life, that you take cognisance of other people on the roads".
"It may sound stupid but I have to ask - please don't tell me that you earned 110 million in one day".
Appearing in court, the UFC fighter boasted to the judge that he earned £140million in one day as he was slapped with a speeding fine.
"What I heard was that I tried my best to pay for it".
McGregor was given two months to make the payment, and even told he could pay in instalments - because of course he needs time to rustle up that kind of cash.
With rumors swirling that Conor McGregor may be in danger of retribution from an Irish crime family, the UFC star issued an apparent invitation on Thursday: "Come and get me!".
Conor McGregor, the mixed martial arts fighter, has been fined €400 for speeding.
This is the third time McGregor was due in court to address the speeding ticket and the judge proceeding over the case wasn't too pleased, according to a report from The Mirror.
But Judge Walsh said that if McGregor wanted to offer mitigation or make a case he "has to be here".
Solicitor Graham Kenny said McGregor was pleading guilty.
"This is absolute disrespect to the court".
Mr Kenny said he would call McGregor at once. If that is not paid within 28 days, the fine increases to €120 (£105).
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