Legendary producer Rick Rubin is known for his work on massively successful releases from the likes of Metallica, Red Hot Chili Peppers and Linkin Park, but Corey Taylor, whose Slipknot recorded their 2004 album ‘Vol. 3 (The Subliminal Verses)’ with Rubin, doesn’t exactly have a glowing review of the experience.

During the Q&A section of his Nov. 18 ‘An Evening With Corey Taylor’ tour stop in Dallas, Taylor was asked specifically about his experience working with Rubin. Without missing a beat, he launched into quite an extensive reply, calling Rubin “overpaid,” “overrated” and a million other nasty things:

“That’s a dangerous, dangerous question … Now, there are some people who would love for me to just be [politically correct] and toe the party line, which is, basically, [to say] ‘You know, working with Rick Rubin was a very enriching experience. He is truly a great mind … ‘Let me give you the f—ing truth of it. Rick Rubin showed up for 45 minutes a week. Yeah. Rick Rubin would then, during that 45 minutes, lay on a couch, have a mic brought in next to his face so he wouldn’t have to f—ing move. I swear to God. And then he would be, like, ‘Play it for me.’ The engineer would play it. And he had shades on the whole time. Never mind the fact that there is no sun in the room — it’s all dark. You just look like an asshole at that point. And he would just stroke his huge beard and try and get as much food out of it as he could. And he would go, ‘Play it again.’ And then he’d be, like, ‘Stop! Do that over.’ And he had an assistant who was seven feet tall. He had that disease where you can’t grow hair on your body, so he was just bald. He looked like Mr. Clean’s neurotic cousin. But he basically ran Rick Rubin’s life — like, he was just f—ing on it, on it, on it, on it. About half way through our precious 45 minutes, he would bring in this plate of s—. I assume it was food. It was bluish green. It smelled like someone had just plunged a f—ing toilet somewhere. And he would eat it as fast as he could — just get it in there, all over himself. Which is, when you’re working, so wonderful to look at … I will say this: I respect what Rick Rubin has done, I respect the work that he has done in the past to get to where he is now. But … this is a huge but … this is a J.Lo-sized ‘but …’ I will say this: The Rick Rubin of today is a thin, thin, thin shadow of the Rick Rubin that he was. He is overrated, he is overpaid, and I will never work with him again as long as I f—ing live.”

Wow. Well, despite what Taylor said, Rubin is doing something right. Black Sabbath recently tapped him to handle production duties on their upcoming reunion album, and he recently hit the studio with Metallica to work on their next studio disc.

Corey Taylor Rips Into Rick Rubin at Dallas Tour Stop