Russell Brand has fired heaps of insults at Katy Perry

He’s gone to town on Katy in his new documentary.

So this is pretty horrible then.

Katy Perry is being used as part of Russell Brand’s stand-up in his new documentary 'Brand: The Second Coming.'

The Mirror are reporting he takes the piss out her accent and portrays her as an air-head:

"I'm associated with the very thing that I detest: vapid, vacuous, plastic, constructed, mindless celebrity. That's the very sea we're swimming in ... 'Oh, who's he? He's married to Katy Perry.'"

Russell and Katy were together from 2010-2012.

His pal Noel Gallagher also features in the doco, telling the camera:

"[Russell] calls me up once and says, 'What happens when she wants to watch a film and I want to watch another film? It's doing my head in!' And I was like, 'Just let her watch the f** film'. I knew at that point this ain't gonna go much further."

Jaysus Russell, not cool man!