"He was saying the worst thing was that he should have just thumped the guy; he came back and felt a coward," McCartney said. "I said, ‘No, no, no, no! The guy had a knife and you don’t know, the guy might be able to use that knife’."
McCartney also told the publication that he was once mugged himself when he was a young boy in Liverpool. "When I was a kid it was four guys and they nicked my watch,” he said. "I was of a similar age. I just happened to be on my own, bigger kids came along and it was the same feeling. [I thought at the time] 'I have got to learn karate and be a black belt — and then I’ll get ’em!' It was the worst thing."