Machine Gun Kelly and Corey Taylor have been in a feud for months.

Last September, the Slipknot singer took to Twitter to provide “receipts.”

Apparently, their beef came down to a collaboration that Taylor turned down.

MGK discussed their beef in the new Hulu doc, “Life in Pink.”

MGK said he “was a fan” of both Slipknot and Corey Taylor.

“He obviously had mutual respect, too, because he cut a verse,” MGK explained.

He explained he tried to give him notes, Taylor said no, and walked away from the project.

“I could have handled it differently,” MGK admitted. “I should have just picked up the phone.”

He added, “But, instead, we all acted ridiculous.”