We have been living with my father for several years, and soon after we started living together, he started coming to our bedroom to cuckold my wife. My wife resisted at first, but now she wants it, and even though I'm sleeping next to her, she says obscene things like "Daddy's big dick is better" and "Cum inside me so hard my uterus goes numb" and even has creampie sex. My father also invited his friends over to our house and had them use electric massagers, rotors, and vibrators to stimulate my wife, getting excited watching her orgasm. I witnessed this scene, but I didn't have the courage to blame him...