It's about a sex club started by high school guys so they could have sex with each others moms.
Starts out with 4 or 5 friends, they seduced each others mom's, weird got out and the sex club grew.
I cannot remember the name on the story, which is technically a novel, or which site I read it on.
The boys don't have sex with their own mothers, but with their friends mothers
Thanks for any help