I too love lyrics & irritate friends by saying many of the things mentioned above, and more!
I am however, a bit unsure about the herb concoction. I grew up in a traditional community, around women who 'saw to things' and the mix I knew of involved other herbs. We knew of parsley, sage, rosemary for medicinal properties (not thyme I think). However, i suspect it may have changed over the years - maybe with what sounded better!
Another version of the Elfin Knight song is Rosemary Lane (listen to Bellowhead's version!)
Loads of songs with double meanings - some fun and some not!
keeping the herbal theme, among my favourites are any of the 'bunch of thyme' songs:
Once I had a bunch of thyme, I thought it never would decay, then a handsome sailor (or soldier!) with a winning smile, he stole my bunch of thyme away.
And we'll all go together to pull wild mountain thyme....
My mother used to sing a version of Strawberry Fair that was very different from the one in the school songbook:
I've a lock without a key.....if you've the key sir, come along with me.....