"I want to thank my son for inviting me to stay with him and his wife. His new house is beautiful and I want to do something special for him. His wife is out jogging for an hour, so I will visit him in his bedroom."
"Honey, wake up. Your mother is here."
Son replies, "Mom, what are you doing naked in my bed? You are supposed to be in the guest room. Where is my wife?"
"I don't believe my mother is sucking my cock."
"Are you sure that you want to fuck your mommy with that big hard cock of yours? If you do, that would be incest. It's perverted deviant immoral behavior. I dare you to fuck me. I dare you to fuck your mother."