Don knew the instant that his daughter started watching him. He had heard her walk by the door toward her bedroom, then heard her come back and he could see her in the mirror when she peeked into the bathroom. He continued to shave, very slowly, nonchalantly, wanting her to get as good a look as possible. The thought of her watching him was arousing, though, and his cock began to become engorged with blood. He was unable to get or maintain a full erection while standing, but he knew that it would thicken a great deal and would soon stick out perpendicular to his body, at least 10 solid...