She takes control

As you kneel down to gather up all of your clothes and shoes she puts her hand on your back and presses you down to all fours. As your hands slap the cement she grabs your hair forcing you to look forward with one and and pulls down your undies with the other.

"Sorry, I can't resist giving you something as thanks for your help."

Still holding your head she proves to be much stronger than you would have guessed, but as you are still very confused at her actions you don't put up much of a fight simply responding. "What do you mean?"

Then you feel her rub some of the grime on the floor into your ass and a look of shock strikes your face, your brain finally gets what's coming but your body is a bit slow in response, and before you can do anything you feel her enter your ass with a savage thrust. You gasp and try to yell but your voice simply won't work as she buries her entire cock deep into your body.

"sshhhhh, you will love this in a sec." with that she begins pumping slowly at first, then with long rithmic strokes she pistons her entire 10" monster in and out of your ass pulling nearly out with each thrust. Finally as your knees give out and you fall to your stomach she releases your head, lifts your right leg in the air and pulls you on her left leg. Getting you like this you look back into her beautiful face and your eyes fall to her amazing tits, you can't believe this perfect woman is now rapidly pounding your ass with such vigor. Then as you see that look you get as you are about to blow on her face she.