I want to be a Bottom Bitch (the futa chose Top)

The dominatrix laughs and nods, before going back to the futa. She unties her and leaves, leaving you and the futa alone in this cell, you tied up and helpless and her, pent up and already rock hard.

With a predatory look in her eyes, she walks up to you, her massive cock swinging left and right with each steps. As she arrives next to you, she firmly grabs your hips and turns you around. Pressing her cock against your ass, she whispers to your ear from behind :

"This week you are my bitch! I will turn you into a real cumdumpster. I will fill you up from both ends with so much of my cum you won’t be able to live without my cock for the rest of your life. I'll fuck you so hard that i'll reshape your ass and you won't be able to walk for a week, but don't worry, you weren't going anywhere anyway."