I found it a very intruiging sentence, mainly because in our elderly home, where I heard that song the first time on my little transistorradio, it would be quite an achievement to come in through our bathroom window. Not much later, reaching my puberty years, I couldn't help imaging what kind of beautiful girls I wished to climb through that same bathroom window. But, of course, that never happened.
Coming of age, Joe Cocker (born in 1944!) still rocks on, although I doubt he will be able to climb through windows nowadays.