McGregor threw a dizzying number of verbal potshots at the undefeated Russian—and naturally worked in plenty of promotion for his Proper No. Twelve Irish Whiskey—throughout the 45-minute event.
Even when reporters addressed Nurmagomedov, McGregor stole the spotlight by shouting over his much more soft-spoken opponent's answers in a wild display of trash talking.
But the comment that is still being talked about on social media came during the fighters' tense staredown. McGregor shockingly called Nurmagomedov's manager, Ali Abdelaziz, a "terrorist snitch."
"Shut your mouth, Ali Abdelaziz! You terrorist! You terrorist snitch!" McGregor yelled, according to Sporting News. "I know a lot about you as well. How's Noah? How's Noah?"
Who is Noah? According to MMA journalist Mike Russell, he's "the son Ali abandoned in Colorado" when he began working as an informant for the NYPD. Abdelaziz has allegedly failed to pay $50,000 in child support over the past decade.
Noah is apparently rooting for McGregor, not Nurmagomedov.
Nurmagomedov's father and coach, Abdulmanap Nurmagomedov, was also targeted. McGregor called him a "quivering coward" during the presser for posing next to the controversial Head of the Chechen Republic, Ramzan Kadyrov, in a picture posted to Instagram.
”The Chechen people know what I’m talking about when I called this man a coward,” McGregor said. “When I called his father a quivering coward. Him and Kadyrov were at a mosque together, and he posts a picture of Kadirov on his Instagram."
"Kadirov’s the Chechen dictator, a crazy man, don’t get me wrong. But, Khabib’s father, lick-ass O’Hoolihan, posts a picture of Kadirov at his mosque and the caption is, ‘Together we are stronger.’”
MMA Mania has further details on Kadyrov's sordid reputation.
Kadyrov and his lieutenants have been accused of war crimes, including most recently the rounding up and execution of gay men.
As far as Chechnya-Dagestan relations go, skirmishes along the border have been common with Kadyrov regularly sending Chechen soldiers into Dagestan on supposed anti-terror operations.
Of course, McGregor also unloaded on Nurmagomedov directly in his typically outlandish fashion.
"I came back for the love of this to come and shut this man up—a little rat, a little weasel, a little man in groups," McGregor said.
"I have met many of them during the years but when it gets hot, he scours away. I came back for the love of war and I am going to truly, truly love putting a bad beating on this little glass jaw rat."
McGregor even attempted to shift the narrative surrounding his infamous bus attack in his favor.
"I just thank the lord Jesus Christ that that man did not have the balls to step off the bus or that bus door didn't open because that man would be dead right now," McGregor said.
"He'd be in a box and I'd be in a cell and we would not have this fight. There are a lot of things I would like to speak about that day and that moment, but there are still a lot of ongoing situations regarding that right now."
Nurmagomedov took McGregor's attacks in stride and hardly showed any emotion.
"Most important is sixth of October," Nurmagomedov said. "He can talk whatever he want and I know he will talk. But the sixth of October is what matters when they close the cage.
"Your grappling is zero," the Russian fighter added. "I'm going to dominate you. It's going to be a long night for you. You fight for money and I fight for legacy."
Watch the two battle for the lightweight title in UFC 229's main event on Saturday, October 6.