You have been getting these weird problems when you jerk off to porn. Your dick gets crazy cramps and since your stepmom is in the medical field you decide to ask her help on this. She is more than happy to help you out and she takes a closer look at your problem. She actually gets a real hands on experience with your dick and somehow she ends up naked along the way. From there the wild exam continues until you and her both end up with orgasm! Did she fix the problem? Not quite yet so more thorough research is needed and lucky for you she is more than willing to take every measure possible to find the solution to your dick cramps. You will never believe what she suggests you and her should do to fix the problem...