This one's an acrostic!Silence! Hush useless talk, unpleasant prattle!How is it that you will not shut up? Until you shut up I shall tirelessly endeavor,To make you shut up.Urgently I implore you:Please shut up now.
haikuSitting there shut upNot posting not typing nowIs what you must be
Silence descendingThe last word has been spoken.Shut up goddamn it.