Every time my stepson looked at me, he got a boner! I thought it must have been a virus or something, because there was no way he wanted to fuck me. As any good stepmom would do, I took him to the hospital, but I didn't think the doctor would be such a perv! She evaluated the situation by checking how hard my stepson's dick got whenever each one of us showed him our tits. I had no choice but to take off my shirt, but she not only took a look at his cock ...