Seasoned erotica authors explore the pleasures of fingers and tongues, real cocks and silicone phalluses, beads and vibrators and every imaginable strategy for indulging in this popular but still taboo sexual activity. There's feather-light foreplay and the grand slam, tickling and teasing and fisting, all to remind us that 'dirty' is not only not a bad word, it can be irresistibly arousing.