A new year and an old feud.

UFC superstar Conor McGregor and former two division world champion Paulie Malignaggi are once again engaged in a war of words.

The two personalities have been trading words since 2017 - when Malignaggi was hired as a sparring partner to prepare McGregor for his August 2017 boxing match with Floyd Mayweather.

The two had a falling out after McGregor released what Malignaggi claimed was doctored footage of their sparring sessions.

For unknown reasons, McGregor once again took to social media to attack Malignaggi.

"Let the record show. I like Paulie Malinaggi. Here is a confrontation between us regarding a picture he was upset about. Yes you heard that right. A picture. I told him here to his face. 'Don’t be bitching.' Common knowledge I would think for a fighting man. Don’t be a bitch, bitching. The same thing I said to Khabib at the end of round 3. My round. Don’t be bitching! Every single round bitching to the referee," McGregor stated.

"He was even bitching in the fourth round from mount position. It baffled me. If anyone should have been saying anything to the referee, it should have been me in that 1st round. That round he held onto my legs for four minutes straight. With zero activity. But a fight is a fight who gives a f***. Crying to the referee like a proper bitch. I was trying to dig my fingers into his Adams Apple. Many individuals in the fight business, I have learned lately, are absolute bitches.

I know you’s are broke boys. But don’t be broke bitches."

But it didn't take long before Malignaggi fired back with some words of his own.

“For a guy that posts about bitch or bitchin an awful lot, its seems this guy doesn't have a proper understanding of what the word means. So I found a recent clip of him exemplifying its definition in one cowardly act," Malignaggi exploded.

"Let the record show that I do like Conor McGregor, everyone loves a piñata and him being combat sports official piñata there’s plenty of entertainment there. I give him credit though. For a guy with absolutely NO BALLS, the woof tickets he sold to all you stupid motherf***ers in recent years is amazing. He’s got a great talent for being a great bullsh*t artist. You can be rich, but you def a bitch you cokehead lush. So don't let that shit you ingested on your Friday night cloud your memory of reality.”