“When I pick up a book of erotica,” says Alison Tyler, “I don’t want to read about ‘beautiful’ and ‘loving.’ I want to read about sweaty and heart-stopping.” Tyler indeed found these latter qualities, in a wealth of variations, when she collected the 27 stories for this smart, raunchy anthology celebrating anal sex. 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. With feather-light foreplay and the grand slam, tickling and teasing and fisting, Luscious reminds us that “dirty” is not only not a bad word, it can make what happens bent over a Harley, on the Appalachian trail, or in an anal sex classroom — some of the kinky locales in this collection — irresistibly arousing.