(I've had a few nights like that, knocking on doors in Soho and finding yourself in someone's living-room at God knows what time in the morning Dead drunk. My girlfriend once woke me; I was standing in the bath in my underpants, walking around. I got so confused I got kind of really angry.)I asked Dave what it's like to be famous and have loads and loads of money and he was really down to earth - like, 'So what?' His mum met mine We all went on his canal barge with Gilbert and George Incredible. Being his mate you meet all these people like Lou Reed or David Bowie and you think, 'Oh my God, rock star, pop star', but once you get talking to them you quickly forget who they are. But then, when I'm talking to Lou Reed, Dave comes over and whispers in my ear, 'That's the guy who sang 'Vicious',' and then you suddenly get a shock and think, Jesus, that's the guy.Bowie looks just like David Bowie A real shock.

He was dead relaxed and calm, and you think, how the hell do you stay like that, going through that? I find it hard enough just being me.I also saw Lady Di at one do She was great I just went, 'Jesus Christ, that's Lady Di.' At a dinner She's just so amazinglyDi Unbelievable.Dave is wacky and wonderful All over the place. Got all these things on the go - like one plus one equals five A nutter Mad ideas - like Warhol But completely in control. Asking 'Do you know this guy who makes weird videos?' and 'D'you know in the 1860s there was this guy who got arrested for sawing his girlfriend in half?'I don't like using humans in formaldehyde Doesn't work. We're used to seeing dead meat but not dead humans, and once they're in formaldehyde you simply think it's a model - like death doesn't really exist I've dealt with dead bodies, I know I did an anatomy course in Leeds I think it's more shocking to use an animal The cow is the most slaughtered animal To present it in formaldehyde is really tragic and banal. A tiger would be too fantastic.I've never seen Dave get squeamish, though I don't think he's been to my studio He's sick, like me A morbid sense of humour.

Somebody once complained that I'd got some cows' heads in my studio: I needed to get some skulls so I had them peeled, but they smelt It's quite normal. I mean it isan artist's studio; you expect it to be a bit weird.When I made the cover forDave's new album, he told me a lot about his drug and near-death experiences. Living in the fast lane and making a lot of money very quick, he got all that trashthat goes with it and survived And he's a family man That's great. And he eats Thai food about five times a week.His flat in Covent Garden is brilliant He did a party for me there I love it Insane.