The son, who is a mother-complex, is still attached to his mother and has no sex life at night. The lower half of the son's wife is sexually frustrated, and she tempts me, her father-in-law, by showing me her panties and breasts. My wife tightly grasped my cock, which was erect despite my age, and started sucking it right next to my mother-in-law and son. We did it while the rest of the family was sleeping and everyone was gone.