Roger Waters has fired back at James Hetfield after the Metallica frontman's speech at the Sphere in Las Vegas last Saturday.
Hetfield told the crowd that Metallica is "not here, like some other entertainers, to influence you with their bullshit," adding that the band's agenda is "love, energy and heavy music."
Appearing on Katie Halper's podcast, Waters said: "Can we stop talking about this prick? I'm so bored with him. He's just showing that he's a complete prick."
Waters also claimed Hetfield has "an IQ of about three," called him "no musician," and said Metallica's acoustic performance was "appalling."
"It's a shame this prick didn't have somebody around him to explain that being kind is way more important than all that loud music and bouncing around," Waters added.
Waters also brought up Metallica's music being used for torture at Guantanamo Bay and Abu Ghraib, and closed his comments with a call for Palestinian solidarity.
Metallica's Life Burns Faster residency at the Sphere continues through March 2028.