Lips and Teeth

The lips separate the inside of the body from the outside world, so can be a very intimate way of showing affection.  From a peck on the cheek to a deep French kiss, they play an active part in lovemaking.  Not only can they can suck, blow and caress, but they are also receptors to touch.  The meeting of two mouths is the perfect symbol, symmetry and equal pleasure between two people.