Perhaps it would be a good idea for a story with a son coming home to an too often drunk party girl of a mother who's a massive slut and doesn't always remember where all the white seed came from.... Even if she wasn't out with guys before coming home

I don’t really do mother/son father/daughter etc stories (the closest I get are step-x), but you might check out http://freeuseworld.tumblr.com/ for that sort of thing.