Perfect Fuckdoll
From below you a cold, steel cock slides upwards to the opening of your ass, and you hungrily press against it, feeling the sensitivity there. It teases your perineum, enhancing the feeling of almost coming, and slides up and begins to fuck you, gently at first, then harder and harder.
Your prostate is on fire, each thrust eliciting incredible frustration as you try and try to come, but for some reason can not. It's infuriating, you have never been so horny in your life, you want to beg the two in front of you to stop the simulation but the gag in your mouth prevents anything more than a moan and they have paid no attention to you since it started... had it been hours ago?
Your mind melts, raw sensation blending as everything deepens. The only thing you are aware of is the sensation of being fucked, of the cock in your ass being replaced with a bigger and bigger one, your ass gaping. Finally, a large, thick silicone monster is pushed up inside you and left there, perfectly filling you, your body clenching it tight.