The presidential candidate threatened to sue the rapper over his platinum song, "Donald Trump," and he even dissed him on Twitter, calling the Pittsburgh native an "ungrateful dog."
Now Miller's firing back in an expletive-riddled speech of his own.
"I only have one thing to say, 'I fucking hate you, Donald Trump,'" Miller said to kick off his appearance on "The Nightly Show" earlier this week.
The rapper then dismantled the presidential hopeful's rhetoric, saying his slogan, "Make America great again," really means, "Make America white again."
"I come here today as a white man with the hope that maybe you'll listen to me," said Miller. "In other words, let me 'white-splain' this to you, you racist son of a bitch."
The rapper called Trump an "egomaniacal, attention-thirsty, psychopathic, power-hungry, delusional waste of skin and bones" and said the candidate is fueling the fire of hate groups and will say or do anything to get "one more minute in the limelight."
But if Trump gets elected, Miller isn't going to Canada like some others.
Miller said he's "staying right the fuck here."
"I'm gonna be here every day telling the world how much I hate you, how much of a clown you are and how we as a nation are better than you will ever be as a racist fuck-wad of a human, because I love America, and I'm never giving it up to a troll like you, you bitch!"
OK, dude. That earns a mic drop.