You tell her you'll impress her even more

"So, you've been holding back on me," Rose says. "Still, I want to see how much pain you can give to that butt of yours, so drum like a maniac. Smash it with your fists, scratch it with your nails. Go crazy, you fucking idiot painslut, and I'll help you take your mind off things, help you damage that backside of yours even more, by twerking for the twerp."

As you go medieval on your backside, hitting it with everything you've got, Rose moves in front of you, bending over and twerking that perfect black-lace-clad butt of hers inches away from your erect cock. Your eyes feast on her flesh, hypnotized by her movements, as you grit your teeth and try to ignore the pain you're inflicting on yourself, instead lost in a fantasy of what you'd like to do to Rose, what you'd like her to do to you.

You don't know how long it carries on for, minutes or hours or days, but eventually you can go on no longer and drop to the ground, her butt still twerking before you. She stops and walks behind you, inspecting the damage. "Mmmmmm, I'm definitely impressed. I think we're kindred spirits, on the same wavelength. I wish you weren't just watching, then I could rub some salt into those wounds." She walks back in front of you and pulls down her knickers, letting you stare straight into that naked beautiful ass of hers. "Wouldn't you like to lick it, or have it sit on you, or maybe even shit on you? Still want to watch, painslut, or ready to have some real fun?"