Your stern but loving mother has been giving you lessons in sex for months now. Today she starts with pussy and ass licking as usual, but then she says she has a surprise for you. In anticipation that you might one day have a dominant partner, she's going to train your ass with some pegging. She starts out slow at first, giving you time to get used to the strap-on, but then she begins teasing you, calling you "mommy's little bitch boy". You do like it after all. She lets you jerk off, but in order to cum, you'll need to admit how much you love having your ass pegged.