See the many other discussions here on this song: links are above. You seem somehow to have found, and revived, the only thread here that contains no information; apart from Alison's helpful link. It contains no information because pretty much everything worth saying (and a great deal that was not worth saying) has already been said elsewhere, in some cases many times over. For once, for a wonder, nobody gave into the temptation to repeat it all yet again.

Let's keep that good resolution. If, once you've read what the other discussions have to say, you are still puzzled by those lines, then do ask again; either here, or (preferably) in a thread that mentions them already. Just, as I'm sure you'll understand, so that discussion is kept focussed and reasonably accessible to people who may seek similar information in the future.