"Well, he's like a joke. There's some fellow in New York, and in the States we'd hear people say: 'You can get everything off him; any pills you want.' It was a big racket, but a joke too about this fellow who cured everyone of everything with all these pills and tranquilizers, injections for this and that; he just kept New York high. That's what 'Dr. Robert' is all about, just a pill doctor who sees you all right. It was a joke between ourselves, but they go in in-jokes and come out out-jokes because everyone listens and puts their own thing on it, which is great. I mean, when I was young I never knew what 'Gilly, Gilly, Ossenfeffer, Katzenellen . . .' was all about, but I still enjoyed singing it. You put your own meaning at your own level to our songs and that's what's great about them."