It turns out Machine Gun Kelly dissing Slipknot as “old weird dudes with masks” during last weekend’s Riot Fest was anything but random.

The “Bloody Valentine” rocker and Knot frontman Corey Taylor apparently have bad blood from when Taylor wrote a verse for Kelly’s 2020 hit album, Tickets to My Downfall.

“[The verse] was f***ing terrible, so I didn’t use it,” Kelly tweeted Monday night.

“[Taylor] got mad about it, and talked s*** to a magazine about the same album he was almost on,” he added, seemingly referring to Taylor’s comments about a certain artist who “failed in one genre and decided to go rock.”

“Y’all’s stories are all off,” Kelly concluded. “Just admit he’s bitter.”

Taylor then returned fire with screenshots of an email exchange between him and Tickets producer Travis Barker. The first email shows Barker sharing Kelly’s notes on what Taylor had written, in which he writes that he’s “honored” to work with the Knot vocalist, but suggests a few changes to the song. In his response to Barker, Taylor wrote that he “listened to the ideas” and felt he wasn’t the “right guy for the track.”

“Nothing personal, I just think if this is what MGK is looking for, someone else is the guy to do it,” Taylor wrote. “It’s ALL good, and I’m stoked for him.”

To accompany the screenshots, Taylor wrote, “I didn’t do the track because I don’t like when people try to ‘write’ for me. I said NO to THEM.”

Kelly then responded to Taylor’s tweet by writing, “Basically, your verse was really bad.”

“Respectfully, I was just telling you to rewrite it because it was really bad,” Kelly added, before suggesting that they record a “Britney Spears song cover together.”

For some reason, we don’t see that happening.

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