Mommy comes into your room and demands to see if you've grown any since the last time she checked, no surprise! Your penis is still impossibly small and is no use to your mommy. She starts humiliating you for having such a useless tiny penis, telling you that you'll never be able to fuck your own mommy with a penis that little, but you know who can, YOUR DOG! Mommy calls in your dog and starts stroking his big dick while humiliating yours !