You (Ben) have been told by your mommy that your dr has prescribed you to cum 5-6 times a day to keep your balls from being too full. Mommy wanted to try and help so she looked at your porn history and found you watch nothing but mommy porn and was turned on by this. She tells you to fuck her and pump all your loads into her, it’s better to keep it in the family. So you pump 6 loads into her making her pussy explode with the amount of cum in it. She rides you telling you she wants even more and that this was how she will keep your balls empty.