This is a true story and goes back to my early teens, it has stayed with me and still gives me powerful orgasms when I am masturbating.
I was 15, and an only child. My mother left my father when I was 15 as she was having an affair with another man, I knew my father was being cuckolded which was strange but sort of exciting. I was curious and looking through my father's drawers one weekend when he was out. My mother had left and he had employed a cleaner, a matronly older woman who was fierce. I found a wad of photographs, they were porn, remember this was before the net. I was overwhelmed looking at them, Then I realised they were firstly of my mother and her lover, and then my father naked, hands tied behind his back with a huge erection. Later there were pictures of him bending over with cane marks on his bum. I also saw a picture of a woman in a leather basque with her tits sticking out of the top. I dropped my trousers and rubbed my throbbing cock until I quickly came.
I became fascinated with the idea of my father having his bottom smacked. Something I would soon learn more of.
One day I came home from school early, I was unwell. I walked into the house and noticed the cleaner's coat was still hanging up, she usually only came in the mornings. I crept upstairs and heard the sound of my father shouting out 'yes miss please, miss' and heard the cleaner's voice saying things like 'you deserve this now' and then the sound of a smack and his yelps. I froze on the stairs listening, my cock rising. She then said 'As you've been kind with my pay again you can kiss my bottom this week, come on kiss my buttocks. I heard him moan, then silence. Soon she said, something like 'As you've been good I will empty those tight balls now, rollover and stick it out for me' 'yes miss' he replied.
There was silence until she said 'Come on now, a big cum for me, you know you can't hold it any longer' and he bellowed and clearly came. I quickly backed down the stairs terrified they'd find me, and grabbed my coat and went outside returning home an hour later to find my father had gone out and the cleaner was no longer there. I went to his bedroom and rubbed myself off thinking about what I had heard.
For years I wanked thinking of my father being wanked and spanked by the cleaner and fantasising that she would do it to me, her strong hands pumping my cock. I later found a letter after my father had died which he was going to send to the cleaner asking for 'one of her special treatments' in which he said he would love and pay her double wages to be placed over her stocking clad knees with his cock pushed between her legs, spanked on each buttock, then rubbed until he could hold it in no loonger.
I still wank today sometimes remembering my father being masturbated.