"Linda and me came over for dinner once and John said, 'You fancy getting the trepanning thing done?' I said, 'Well, what is it?' and he said, 'Well, you kind of have a hole bored into your skull and it relieves the pressure.' We're sitting at dinner and this is seriously being offered! Now, this wasn't a joke, this was like, Let's go next week, we know a guy who can do it and maybe we can do it all together. So I said, 'Look, you go and have it done, and if it works, great. Tell us about it and we'll all have it.' But I'm afraid I've always been a bit cynical about stuff like that -- thank God! -- because I think that there's so much crap that you've got to be careful of. But John was more open to things like that."