Musician Sir Paul McCartney laughs at fans who claim to understand the songs he writes, because most of the time they mean nothing. The former Beatle claims he sits down to write songs with no idea about he wants to create. He says, "When I write something, half the time I don't have a specific idea of what it's about. "I've always had a wave of people who interpret things and say, 'Oooh...he's talking about Yoko.' And I'm thinking, 'What? I'm bloody not. I'm talking about a car.' Yoko, Volvo, easy mistake."