Of "Bully Gets Wimp's Mother"? Only two chapters on Literotica. I have read chapter 3, and it's a bit of a mystery. The storyline is sort of sidetracked, as Mom consults a psychologist for her troubled mind, the son isn't mentioned and Mom and Bully never fuck IIRC. It was a let-down compared to the first two chapters. I think you can find it through the Wayback Machine.