During a recent Q&A session at one of his shows, Corey Taylor ripped into big name producer Rick Rubin -- taking shots at everything from his work ethic to his eating habits.

The 'An Evening with Corey Taylor' tour is easily becoming one of the most talked about rock tours of the year. The set features Taylor reading excerpts from his 'Seven Deadly Sins' book, a Q&A session, and acoustic performances of songs by Slipknot, Stone Sour, and covers of everything from Alice in Chains to Bon Jovi.

During the Q&A portion of his set at Tree's in  Dallas, Texas last week, Taylor was asked about the  experience of working with acclaimed producer Rick Rubin -- who is known for his work with Red Hot Chili Peppers, Johnny Cash, Slayer, and produced Slipknot's 'Vol. 3: (The Subliminal Verses).' Taylor prefaced his forthcoming character assassination of Rubin by saying:

"There are some people who would love for me to toe the party line, which is basically, ‘Working with Rick Rubin was a very enriching experience. Let me give you the f---ing truth of it."

Taylor then explained that not only was it not a "very enriching experience," it was barely an experience at all:

"Rick Rubin showed up for 45 minutes a week. Rick Rubin would then, during that 45 minutes, lay on a couch and have a mic brought in next to face so he wouldn’t have to move. 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 there was no sun in the room. You just look like an a--hole at that point. He would stroke his huge beard and try and get as much food out of it as he could. He would go, ‘Play it again,’ then he’d be like, ‘Stop – do that over.’"

Taylor then poked fun at Rubin's "seven foot tall" assistant, who he claims basically runs the producer's life. Not everything he had to say was negative --  he then admitted that he has respect for Rubin's past body of work, but followed that by saying:

"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."

The Slipknot vocalist is not the first to make claims about the way Rubin produces, Velvet Revolver brought in Brendan O' Brien to replace him during the 'Libertad' sessions. Slash told Ultimate Guitar that Rubin would show up every two or three weeks for a half an hour and did little more than listen to a few songs and tell them to write some material.

Rick Rubin is set as the producer on the forthcoming Metallica and Linkin Park records as well as the Black Sabbath reunion album, his most recent production credits can be found on Red Hot Chili Peppers' 'I'm With You' and the chart topping '21' from Adele.

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