(You may want to read the first two chapters before reading this one since it is a continuation of the scenes started in the first chapters.)
My Mother had made sure my big cock with its fat head had gone all the way into Rose's tight pussy. Our house girl was naked on all fours on my bed and my Mother was standing right beside me with her right hand playing with my balls. She would separate them and then gather them back together. It made going in and out of Rose feel even better. My Mother moved and stood behind me and spread my ass cheeks and started touching my asshole. Each time she touched it I would plunge deep into Rose and she would yelp like a pup.
My Mother put her finger in her mouth and wet it and then started pressing harder against my sphincter muscle. My asshole was gradually opening to my Mother's probing. When her finger broke through, I went so deep into our house girl's cunt that she didn't just yelp. She cried out in both joy and pain. My mother handed me her panties to put in the girl's mouth to muffle her screams. I hadn't known my Mother had removed her own panties.
Thinking about my Mother's naked vagina and having her finger up my ass made me pound Rose with all my might. Just before I was about to cum I was pulled off the help by my mother and she slapped my cock to make it go down some. It took a number of slaps before she got it as soft as she wanted it.
"You can cum yet big boy," she said to me as she pulled her skirt up to show me she did not have any panties on which I already knew. Her fat pussy lips were engorged. She was wet. She had obviously enjoyed the show.
What I did not know at the time, but was to learn later was that my Mother had been raised by very domineering parents. My Mother was not what she seemed to the world to be.
"Rose get off that bed. You know you are not allowed in our beds."
Rose did not move very fast. She moved as if something was stuck between her legs. When she got to her feet she stood with her legs wide apart and the fingers of her right hand in her womanhood. Her left hand played with first one then the other of her much extended nipples. I had never seen nipples sticking so far out before.