How to properly administer test to your lady..
http://www.newscientist.com/news/print.jsp?id=ns99992457
http://www.newscientist.com/news/print.jsp?id=ns99992457
http://www.newscientist.com/news/print.jsp?id=ns99992457
http://www.newscientist.com/news/print.jsp?id=ns99992457