I knock on your door and enter without thinking, just to let you know of a change in plans. Imagine your mother's surprise to find you jerking off-- and her astonishment when she asks why you aren't stopping! Do you... want to stroke your cock for your mom? Well... I have caught you looking a couple times... listen, sweetie, don't tell anyone, okay? Mommy's going to help you out and give you something to stroke to! I pull up my dress and flash you my big BBW ass before turning around and taking out my huge tits. Why don't you show Mommy how much you love her big, bouncing breasts by blowing a huge load for them? We have to be quick, or they'll get suspicious. Remember, sweetie... this is our secret.