Explain to her what is about to happen

You smile sweetly at Brittany, an expression totally at odds with what's about to come.

"Hi Brittany. I am about to use you as my cock socket. I am going to plug your throat with my dick. You are going to find it hard to breathe while I ram my cock down your throat over and over again. This is going to be, by far, the most degrading thing that will ever happen to you. And I am going to love every second of my hard ass dick down your motherfucking throat."

Up her throat? You are unsure of the proper terminology given Brittany's current predicament. Her mouth, conveniently, is open in shock, and you can see in her eyes her adrenaline kick into high gear. She squirms harder, swaying herself back and forth from your makeshift trap, but having little effect. You continue verbally defiling your masturbatory teenage dream cunt.

"The tip of my cock is going to hit the back of your mouth, and then slide into your throat. I am going to massage my cock with your throat. I am going to make sure that you gag and **** all over my dick. Your mouth is going to be my wet fleshlight. The more you ****, the harder I'll get, and the harder I get the deeper I am going to jam myself down your mouth."

You give her face a quick couple cock slaps, relishing in your level of control as you grab her arms and rub your crotch all over face.

"Look at you, you little fuck snatch, my nuts in your face, good little **** slut."

You spin her around and spank her ass, hard. She squeals like a pig in distress while you wind up and slap her other cheek. Spinning her back around and making sure she can see you, you ram it all home.

"I am going to **** your throat."