Sex Pistols rocker John Lydon has blasted Sting and described his band The Police as "soggy dead carcasses".
Lydon - better known as Johnny Rotten - is unimpressed by the Roxanne rockers' recent comeback, and mocked frontman Sting calling him "Stink".
He said: "That really is a reformation isn't it? But honestly that's like soggy old dead carcasses. You know listening to Stink trying to squeak through Roxanne one more time that's not fun."
The Police are currently in the middle of a nine-month world tour. They announced their reunion at the Grammy Awards in February.
Sting, 55, wasn't the only musician to feel the wrathful tongue of the ageing punk.
Lydon, 51, also criticised troubled stars Pete Doherty and Amy Winehouse, likening them to his former bandmate Sid Vicious, who died of an accidental heroin overdose in 1979.
He said: "Banging on about your drug habits is a bit old fart isn't it? You know you can use drugs for entertainment but you should be quiet about it.
"They obviously don't enjoy what they're doing and that's why you turn to drugs. That's what happened with Sid. It's a slow suicide and it's a cry for help because they're in mental pain."
Lydon is set to reunite with original Sex Pistols, guitarist Steve Jones, bassist Glen Matlock and drummer Paul Cook for a one-off show at the Brixton Academy on 8 November.
The concert marks the 30th anniversary of their iconic album Never Mind the Bollocks.