Acacia, burnt myrrh, velvet, pricky stings
—I'm not so young but not so very old
Said screwed-up lovely 23
A final sense of being right out in the cold

 The subtitle of this song comes from an 1867  letter  from  Algernon Charles Swinburne , on the subject of de Sade’s  Justine . 
 Apparently the phrase delighted Berryman. Swinburne, a committed masochist in his sexual life, had a real respect for the original Sadist. This first line refer to some of the S&Mer’s more common tools. 
 Acacia , is also known as “thorntree” or “wattle.”  Myrrh , also a thorny tree, can be burned for incense or oils. Velvet feels nice. Pricky stings are, in all likelihood, just what they sound like.
Dream Song 3 A Stimulant for an Old Beast