"Grinding: to rotate hips in an erotic manner," explains the always helpful WikiHow in a guide that teaches teenage girls how to "be the best grinder at any party." But I know firsthand that grinding is too complicated to be illustrated in five simple steps.
• Good news for undersexed ladies: Scientists may be close to developing a libido-boosting pill for women. The drug was initially developed as an antidepressant, but trials showed it made participants no happier, but a little hornier. •