Thanks, dirty_sanchez

 

This lovely little rhyme is from a book called "Tommy Thumb's Pretty Song Book," published in London in 1744.

I had a feeling that the third line, "barley butt," meant something more than just an odd grain-related insult. So I did some googling. Then I put on some PPE and clicked on the Urban Dictionary link and found this:

Thanks be to dirty_sanchez for confirming my hunch there was someting more going around.