It is a simple song with a pretty tune. Might it have been at some point in its evolution a Valentine verse? I know a professional singer who sings it in the folk clubs and I've never heard anyone react to it using some of the invective here. Perhaps it would be more use nowadays in primary school, but some of us think its charm lies in its simplicity. Like many people I often find myself singing it absent-mindedly or humming the tune. Oh, just in case you get the wrong impression here, I'm more used to singing bawdy stuff, sea shanties and industrial songs.