Four years after naming a popular song after Donald Trump, rapper Mac Miller is again throwing shade at the Republican presidential frontrunner.

As Trump was preparing to take the stage for Tuesday night’s Republican presidential debate on CNN, Miller was taking shots at the New York billionaire on Twitter. The rapper went off on an unprovoked rant about Trump’s supporters, racial tension, the Black Lives Matter movement, and multiculturalism.

Mac Miller first dedicated a song to Trump in 2011.

Titled “Donald Trump,” Mac Miller raps, “Take over the world when I’m on my Donald Trump s—t, Look at all this money, ain’t that some s—t.”

The video now has more than 100 million views on YouTube.

After the video hit 20 million views, in Aug. 2011, Trump responded with a video of his own, saying, “Maybe you should pay me a lot of money.”

Trump went on to say he was “proud” of the feat, nonetheless.

Nearly two years later, Miller changed his tune about wanting to be like the real estate tycoon, who he previously rapped didn’t have to “give a f—k about a budget,” because he is “always be the subject of discussion.”

After hearing Trump was mulling the idea of a White House run in 2013, Miller told Complex magazine, “When he started running for president I was like, ‘Oh, f—k—this is horrible, I have a f—king song with this dude’s name and now he’s being such a douchebag.’”

Trump responded to those comments on Twitter and threatened to sue the rapper for using his name without permission.

“I’m now going to teach you a big boy lesson about lawsuits and finance. You ungrateful dog!” tweeted Trump.

Trump also posted a Vine, wherein he shared a plaque given to him by Miller.

Calling the plaque a “crummy gift,” Trump said he would “rather have the money.”