I was h**** one day and decided to look up p*** type stories. I stumbled upon this road trip to college story where people have to cram into the car and sit on each other’s laps etc. This bird was sitting in a guys lap getting hornier and hornier till she decides to just take him. It was the most amazing story that I had a very intense o***** over. Took me a far too long to twig that the people having s** were mother and son, but it’s my go to story that always gives me the best orgasms I’ve ever had