Your Father is staying with us the night before he has a procedure done to correct his intense nightwalking episodes. We live close to the doctor's office so it made sense that I would drive him in the morning. Your Mom warned us though, he does something very strange when he has an "episode". Without waking up, he will get extremely horny and begin having aggressive sex with your Mother out of nowhere. She said to make sure to never wake him during this time or he becomes angry and violent. It's best to let him finish and go back to bed. You're away on an overnight business trip when I'm in bed, still filled with cum from my rendezvous earlier(but that's another story), and your Dad walks right in and grabs my leg. He jolts me awake and starts fucking me right away! His eyes are closed but his cock is rock hard. I call you and ask what I should do, to my surprise you start getting turned on by hearing me get fucked by your Dad and you start jerking off. You love knowing your wife is being used like a submissive cum slut by her Father in Law. You stay on the phone while Daddy turns me over and fucks me like a good girl. I let him use my holes and cum inside me, careful not to wake him.