``It's a waste of hot water, so why don't we take a bath together?'' An adolescent son's heart flutters when he hears his mother's casual comment. A mother washes her son's body in a small bathroom with no water available. Every time our bodies touch each other, the number of words we can say becomes fewer and the insides of our mouths become dry. By the time he washes his lower body, he gets completely erect and begins to gently teach his shy son how to have sex. Touching his erect penis, his sexual desire rises and he provokes his son by saying, ``I'll wash your body too...''