Conor McGregor threatened to smash a reporter's nose after he highlighted that the Dubliner has only tasted victory once since Barack Obama was US president.
McGregor was furious with the comment and demanded that someone in the crowd attack the journalist at the UFC 264 press conference in the early hours of Friday morning.
“You have one won fight since Barack Obama was President,” the interviewer said.
“Shut your mouth or I’ll go down [there] and smash your nose in,” McGregor responded.
“I’ll smash your nose in you little rat, you little rat. Someone smack him!”
The reporter continued: “This man [Poirier] sent you to a place where time doesn’t exist six months ago. We want to know why anyone should expect anything different on Saturday.”
McGregor hit back by saying: "It's one more fight I won than your little sissy ass. You little fanny pad."
The Notorious has vowed to "kill" Poirier in their main event bout this weekend.
He said at the press conference: "Your'e getting walked like a dog in that octagon.
"This is my bread and butter, this is what wakes me up in the morning with fire in my belly," he added. "Errors to correct, tactics to prepare for, I've had a great camp and a great focus on the opponent.
"Im going to go through his head, put holes in it and take it off his shoulders. He's done here, this is it for him, it's the end of the road.
"Saturday night he's getting walked around that octagon like a dog and put to sleep.
"This will be beautiful, it will be another feather in the cap, it's what I love to do. I love to come in here, defy the odds, do the unthinkable and put on a show."
When asked about his motivation ahead of the fight, McGregor responded: "I'm back on the building site, I've a hard hat, a hi-vis and I've two hammers in my hands.
"That's my mindset; I'm not relishing my past accomplishments, all the money in my bank, all the Forbes accomplishments, I don't care about that.
"I'm back on the site in the hi-vis with two hammers in my hands."
