Your body exists for pleasure, but not yours.

Cindi slides up on the desk next to you. Her skirt bulges obscenely with her strap on stuffed beneath it and you can see her arousal dripping down her thigh in beautiful beads. You want nothing more than to clean up every dreamy drop with your tongue, but even a 'stupid sissy slut' like you knows better than to worry about what you want. Instead, you wait for your Mistress' slightest, subtlest suggestion."

"****! Eat my cunt and suck my cock while our pretty pupil watches." Hardly subtle, Cindi's commands have Emma up on the desk in seconds, diving face deep in her sopping slit and slobbering up her synthetic shaft. You ache agonizingly wishing you were your twin's talented tongue, but you watch intently memorizing her every move. Emma makes quite a show of it, loudly slurping and sucking as her flushed face is drenched with your Mistress' jubilant juices. It's a distinctly disturbing sight to see your warped reflection relishing the dish you'd die to savor again.

"Enough, you gluttonous sow! I didn't give you permission to make me cum!" Cindi pushes your sister away as she pouts and pants. You sneer down smugly as she squirms, and then your Mistress points to her pussy and your eyes are on the prize. You want nothing more than to greedily guzzle her moist mound just like your selfish sister, but you know better than to indulge your own hungers. Instead, you notice how the base of her huge rubber cock is pressed against her luscious lower lips, ravishingly rubbing against her clit. You look up at her with longing lust as you stroke her shaft, grinding against her groin.

"God NGG Damn! Pay AH attention, ****. You MMM might learn something NNF from our OOOH slutty student here." Cindi coos down at you as you lap lightly at her lips, still sliding your hand up down her shaft before kissing your way up to the head. "See? A good NGH **** uses her WHIMPER whole body to please me, including her EEE eyes. You've gotten AH complacent, ****. Forgotten the MOAN showmanship...the MMM romance." You wrap your lips around her cockhead and suck sweetly in a slow spiral until your nose crushes against her soft stomach. You stretch your tongue until you feel it will snap and slide it inside her hot hole.

"Good slut! Clever little WHIMPER whore. Fuck...yes...just stick OOH your stupid tongue AH out while I fuck your NNF face! AH AH AAAH Yes! UH UNH NGGGH Yesssssss! YIP YELP YeeeEeeEEEEEEEEE!" Cindi grabs your head and pistons her hips to jackhammer her plastic prick down your throat and your tongue deep inside her creamy cunt. You feel lower than when the jock jerkoffs throated you. At least they treated you like a wanton whore. Your Mistress is using you like a filthy fuckdoll...like a mindless toy. You love it. You can taste her pleasure as she sprays all over you, and the next instant you are cast from Heaven and hurtle to the floor as she pushes you away.

"That's enough lessons for one day. ****, take this B plus bimbo down to the basement and help her 'cram' for her first test. And as for you," Cindi places her boot at your lips, allowing you to kiss it for one brief, beautiful second before pulling it away, "a reward." She turns and goes upstairs, every step a vision of perfection, leaving you to Hell as she ascends the heavens. You lick your lips and long for the taste of her heel and another drink of her delicious dampness. Instead you are dragged deeper into the depths of darkness by your sadistic sister. She scowls at you, clearly jealous of your favored attention. You wonder how she plans to take it out on you during your 'cram' session.