In astrology Scorpio is the sign of sex. What this means is that Scorpio represents the power of procreation, of creation, the power of birth, life, death, and rebirthing. So, all of that symbolically represents what the Scorpio journey is about.
In body parts, the sign of Scorpio rules the genitals. Now, other signs may be turned on by stroking or fondling of other parts of the body, but for Scorpio it is completely focused on the genitals.
So, what this really means is that the attention that you give to a Scorpio should be one of not being withdrawn or not withholding. You can, both male and female Scorpio, explore their, what we might call, private parts. Do so gently. Do so with an open heart. In general you can use practically anything. Use your body. Use your lips. Use your fingers. Use your hands. That is where the Scorpio is most focused, most turned on by, and experiences the deepest and most spiritual kind of sex.
Again, when I talk about a Scorpio and its spirituality it has to do with the profundity of its feelings. For Scorpio to enter into love making, to have a sexual experience in which he or she shares the essence of himself or herself, that is a profound experience. Therefore, it is focused on the genitals.