COLUMBUS, OH - MAY 23:  Waylon Reavis of Mushroomhead performs at Columbus Crew Stadium in Columbus, Ohio on MAY 23, 2010.(Ph
Raymond Boyd/Michael Ochs Archives/Getty Images

Slipknot and Mushroomhead are two bands that wear masks and outlandish, scary costumes. The groups have beefed tremendously in the past—their greatest rivalry, believe it or not, concerns who started wearing the garish outfits first—but former Mushroomhead vocalist Waylon Reavis has switched camps.

In an interview with Rock Rage Radio earlier this month, Reavis pulled no punches, admitting that "Slipknot is better." 

But that wasn't all. Reavis lobbed a series of verbal grenades at Mushroomhead, praising Slipknot and denigrating his former bandmates, who he said are "not good people."

“Slipknot is better. Flat out. Corey Taylor, you’re a badass fuckin’ singer. Slipknot, you’re a great fucking performance… I’ll say it personally because I wasn’t in Mushroomhead when all that shit went down. Guys, Slipknot is better. Hands down.

Metalsucks brings to memory Reavis' departure from Mushroomhead, which apparently hinged on messy things like "snitching" and money issues. Reavis used the interview to chastise his former band: 

“You know why [Mushroomhead] didn’t make it in this industry? Because they fucked over people all over the industry. They shit talk. They don’t care about you. They want your money. They’re not good people.”

Perhaps worst of all were Reavis' departing words: 

“Mushroomhead is nix. I hope they die slowly. I hope their fan base just goes down, and down, and down. I will never sing a song with them ever again. I wish I had never met ’em.”

Watch video of the full interview below, then watch Slipknot's Corey Taylor not-so-subtly smack the phone out of a fan's hand for texting during a show