Doggerel: or What is This?

Doggerel is the mongerel [sic] form
of blue blood poetry--
the plum blossom stink,
the tongue stuck in cheek
of honeyed gallantry--
the "Roses are red. Violets are blue.
Won't you come and kiss my shoe?"--
the stupid words to sublime tunes--
jingles that charm the money from you--
spit out the pebbles and run your mouth.
Oh, dear. Such scruffy fun . . .