I read somewhere in 2011, I remember a small plot, a mother comes with her son to sort out a bully's house, but in the story the bully's mother ties up the mother, then the bully slowly undresses her, the emphasis was on undressing, groping, playing with breasts and nipples
At the same time, all this is happening in front of her son
and it also seems that the bully was younger than her son
That's all I remember