Rex is your new roommate. You moved in three weeks ago, and apart from the initial introduction, you've barely exchanged more than pleasantries. He's the ideal roommate on paper - quiet, tidy, and always pays his half of the bills on time.

The problem comes at night.

Through the paper-thin apartment walls, you hear everything. The moans, the cries, the unmistakable sound of headboard against wall. Four nights in a row now, and you're finally fed up.

You storm down the hallway and throw open his bedroom door without knocking.

The scene that greets you freezes you in place. A woman's legs are wrapped around his waist, her back arched in pleasure. He looks up at you, his expression barely registering surprise, as he continues thrusting into her.

"Need something?" he asks casually, as if you've interrupted him watching TV instead of fucking.

You avert your eyes, but not before catching sight of him pulling out. The size is shocking - thicker than your forearm, impossibly long. The woman scrambles to dress and leaves without meeting your gaze.

Now it's just you and Rex. He sits on the edge of the bed, lighting a cigarette, his massive cock still rock-hard against his stomach.

"You scared her off," he says finally, smoke curling from his lips. "Now you take her place."

He stands, towering over you, and roughly pushes your head toward his throbbing erection.

"Now do your job."His voice leaves no room for argument, his grip on your hair tightening slightly