"Filthy Shakespeare: Shakespeare's Most Outrageous Sexual Puns" (Gotham Books. $19.99. 304 pages), by Pauline Kiernan: In high school, when Miss Grundy rubbed your adolescent nose in Shakespeare, she was perhaps unaware that the Bard of Avon had ye pottye mouthe.

With more than four centuries of language shifts and Shakespeare's unmatched genius for puns and double-entendre, most readers today, unlike those of his time, skim past it.

But help has arrived in a book, "Filthy Shakespeare. Shakespeare's Most Outrageous Sexual Puns" by Oxford Ph.D. Pauline Kiernan.