I was secretly masturbating while watching a woman from the shadows. The woman noticed and started to pay attention to my lower body, so I exposed my erect cock. "Maybe... you're stroking your cock while looking at me? If so, come closer. I'll be your wank." The woman beckons me, leading me to masturbate right in front of her. The woman shows me her underwear and brings her tongue and fingers close to my cock, teasing me by saying, "No touching!" But when I continued to touch her and appeal, she said, "Just a little" and served me!