The former Guns N' Roses bassist makes the comments while answering the renowned Proust Questionnaire, designed to reveal personality traits. Asked about his darkest moment, McKagan says: "It was really being stuck in addiction and not being able to get out of it and thinking that this would be the end of me soon."

He reveals his idea of earthly happiness is self-confidence, adding: "Finally being truthful with yourself, just for one day, can have really great follow-up."

On his dinner guests he reports: "Of course you'd say the Dalai Lama and Oprah. But I was thinking Hitler." He'd like to ask the Nazi leader: "'What the f*** is your deal? I've read about you, I know about you - do you realise you're insane, or do you not think you're insane?'"