(the Big O) Orgasm:the Big O is the subject of countless girl-talk columns...
One in three women reported never or infrequently mouthing the big O during sexual intercourse.
From Charlotte's dalliances with a pink vibrator called The Rabbit to Samantha's short-lived horror at losing her mojo, the big O has been demystified in a way that even how-to manual The Joy Of Sex didn't manage.
As other women's magazines focus almost exclusively on the other big O - the orgasm - "O" unabashedly features all things Oprah.