I think it's this one :
https://www.smashwords.com/books/view/927889Unfortunately I don't really know cause I can't buy it where I live but the description of the story is insane !! (Hope I can one day)
This is her description :
Tony is a 26 year old virgin, but there's a reason for that. His mother has kept him locked in her closet while in chastity, and he has no choice but to obey her every command. It's a hard life for Tony, but he manages to survive by worshiping his mother, and cleaning up after the other men that come to sleep with his mother. Less
"He finished his improvised prayer, and his mother laughed at him. She got off on having her son treat her as if she was his religion."
Of all of the men that his mother brought over, Ronny was the worst. Tony hated him, but he was forced to serve as a cuckold while his enemy ravished his mother. The act of witnessing such a horrific event was one thing, but the laughter Tony had to endure was the most humiliating aspect of being his mother's cuckold slave!
If anyone have this story please can you share it here or in private message or email , would be very very grateful.
I think it this story even if I didn't read it because it seems like the son is forced by his mom and bully and is unwilling
Another story when the son is willing might be this one from the same writer
https://www.smashwords.com/books/view/1001243This is the description
I didn't hesitate to agree to becoming Mommy's cuckold. I was always attracted to her, and I was willing to do anything to worship her. The reality was, I was going to be placed in chastity and humiliated while a black man released himself into her. I was there to clean up the mess, and nobody felt the need to respect me...
If anyone can share them would be great !!