Laying down the rules for today.

'I have paid,' you begin, eyes running over Karen's body as she begins to struggle against the rack, arms and legs pulling fruitlessly against the straps. 'An awfully large sum of money for today, and doing so has afforded me a very interesting level of control over you. I feel that a demonstration should show you how hopeless your situation really is, right now.'

You reach out, taking Karen's pale chin in your hand and forcing her to face you.

'Look at me,' you say, when she closes her eyes, and she obeys. 'Now, cum. Hard.'

It takes a moment for the command to percolate in Karen's mind, to be properly decoded and for her body to prepare itself to obey. An orgasm doesn't happen instantly, but her flesh does bend to your will. And then, shrieking, Karen climaxes.

Certainly it takes her by surprise, rapid and powerful pleasure burning through her body in the span of a few seconds, devoid of kinks or turn-ons or foreplay. Just a single command, and then instant orgasm, like flipping a switch. Her hips roll against whatever invisible touch she feels to elicit this, body trembling and shuddering as wave after wave of pure, undiluted ecstasy rips through her, and all throughout you watch, without disguising your interest.

Right now, she's your own personal little porn show, and you both know it.

Karen's initial scream fades into formless, high-pitched moans and gasps, pink lips parted in an "o" that, in the back of your mind, you remind yourself to slide your cock into later. She pulls at the straps harder than before for a moment, her sweet, tall body taut and shaking for ten seconds, fifteen, twenty, before finally relaxing back against the frame of the rack, panting for breath.

'I have your mind, Miss Gillan,' you whisper to her as she comes down, cheeks burning as she glares at you. 'Whatever I want, you will obey. I don't even need you on this rack, girl, I just want you there because I love to see you squirm. Don't believe me?'- and you can see it in her eyes, sheer disbelief at the impossible things you're claiming- 'Perhaps you need another demonstration...'