Nina Hartley's Guide to Anal Sex. Informative, frank, and humorous! Nina Hartley guides you to backdoor fun with Anna Malle, Hank Armstrong, and John Decker. She doesn't call it "Anal Sex" - see why! See how and why of this taboo and start your own journey into forbidden eroticism. Nina slowly and expertly helps the ladies entertain their men, first with achingly slow fellatio...ending up with a rump-bumping rodeo!.