"I knew it would get connotations, but it really was a children's song. I just loved the idea of kids singing it. With 'Yellow Submarine' the whole idea was, 'If someday I came across some kids singing it, that will be it -- so it's got to be very easy.' There isn't a single big word. Kids will understand it easier than adults. 'In the town where I was born/there lived a man who sailed to sea/And he told of his life in the land of submarines.' That's really the beginning of a kid's story. There's some stuff in Greece like icing sugar -- you eat it. It's like a sweet and you drop it into water. It's called submarine; we had it on holiday."