Eminem is being targeted by rival rapper Gucci Mane in a series of new comments attacking his hip-hop credibility and status.
It's been a year filled with feuds for the 'Lose Yourself' hitmaker, who yet again caused controversy with lyrical content including homophobic slurs and violence against women.
The most notable beef of Eminem's in 2018 was surely with Machine Gun Kelly (MGK), but 'Pillz' hitmaker Gucci Mane now appears to want a piece of the action.
"You've gotta come with a better name!" Mane said of Eminem on US comedian Rickey Smiley's radio show.
"I ain't playing Eminem in my car! You play him in yours? ... You sliding around playing Eminem in your car with your old lady?!"
He also denied Eminem was the king of rap: "I know the king of rap: me!"
Gucci Mane also claimed Jay-Z couldn't be the king of rap because he wasn't from Atlanta, and alleged that every single rapper from Atlanta was inspired by him.
It's not the first time Gucci Mane has attempted to launch a feud with Eminem.
In 2009, he featured on an official remix of Mariah Carey's 'Obsessed', which took aim at Eminem over a relationship she and him had together.
Although Eminem responded in 'The Warning', he didn't mention Gucci Mane in it - keeping his focus squarely on Mariah.
In addition to his musical career, Gucci Mane starred in 2012 film Spring Breakers.
He's also spent time in prison on multiple occasions, having been found guilty of firearms and drugs charges, along with driving issues and aggravated assault.
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Eminem has not responded on social media to Gucci Mane's diss - but if his 2018 so far is anything to go by, he'll be attacking the rival in a new rhyme soon.