My father-in-law had learned every one of my sensitive spots by spying on my husband and me, which made me despise him. Still insatiable in old age, he even left me to clean up piles of tissues after he masturbated. Then he revealed just how vile he really was: working my right nipple with precision, eating me out in a steady rhythm, and switching between brutal pounding and slow, slick strokes. His terrifying stamina never faded, no matter how many times he came. The sex felt so good that I finally begged him to thrust deeper and creampie me.