Fuck the bitch

Watching your sister exercise for you is getting you hard. There's no point wasting that erection when her delectable mouth, tits, ass and pussy are all yours to control, and you decide that taking over as your blonde fucktoy's personal trainer is the best way to take full advantage of her youthful, nubile body.

"Britney, from now on I am your fitness instructor. You will still do your normal exercises, but at times I will modify your routine so that you can work out that lovely body of yours while servicing my dick. You will find these modifications especially rewarding, and necessary for your continued physical development. Do you understand?"

"Yes, master, I understand," your mindless fuckthing responds. Your sister is so deep into your hypnotic spell that you could probably convince her that every way of fucking her is somehow good for her health. But right now you're far more interested in testing how every orifice she has would feel against your cock.

"All right, your first modification is to give me a blowjob while fingering your pussy. You may begin."

"Yes, master." As if it were the most natural request in the world, your blonde sex **** puckers your member and teases it playfully with her tongue before swallowing it and sucking it, all the while reaching between her legs and frigging herself so she can get her pussy nice and wet for you. Her licks tickle and excite your cock, and you can feel her savor your precum as the first drops of your man juice and her saliva mix lovingly inside of her.

You can't believe how much this is turning you on. Perhaps it's because your older sister, who has spent so much of her life treating you like shit, is now putting her dirty lips to much better use, slurping your cock submissively just like you imagined in your most basic fantasies. On the other hand, it might be the anticipation of knowing that your sister's hot body is completely under your mercy, to twist and perform whatever exercises will please your dick the most. Of course, all of that imagination is obsoleted by the feeling of your blonde ****'s mouth, eagerly savoring every inch of your horny shaft.

Between her excellent technique and imagining her doing naked jumping jacks again, you could probably come inside of Britney's mouth if you gave her the time to service you, but you have loftier goals for your willing sex puppet.

"Well done, Britney. For your next exercise, I want to feel your boobs now. Go on your knees so you can titty-fuck me."

"Yes, master." Obediently your blonde hypnoslut switches positions, grabbing her perky titties and rubbing them against your member. Your blonde sex toy knows how good it feels to have her cleavage wrapped around your erect member, so she wisely uses her hands to push her melons together, ensuring that every inch of your shaft is stimulated and buried in her perky breasts. As an added incentive, you tweak your tit ****'s nipples, sending her deeper into submission.

Unlike Jessica's tits, which you've barely felt, your molestation of Britney's boobs are so thorough that you can feel whatever aversion you have to **** slipping away. There's no way that your Barbie doll schoolgirl's boobs should belong to anyone else. She's worked far too hard, from the moment she worked out to match her cheerleader friend's physical regiments, to competing in exercises against her own sister, to be used as anything else other than your obedient fucktoy. As her eyes beg for you to continue violating her, mouth, boobs and all, you realize that there's only one logical conclusion to today's naked workout routine.

"Sit on my dick, Britney. Fuck me nice and slow. This is part of your workout."

"Yes, master." With her breasts facing you and her legs spread, your blonde sex **** obediently mounts your hard member, titties wobbling and slowly thrusting her pussy up and down in the name of pleasuring you and bringing you to orgasm.

As your fuck puppet lifts herself out of you over and over again, you can't help but watch your blonde slut's boobs jiggle ever closer to you, her toned body clenched, her bubbly ass rippling with desire, and your dick repeatedly disappearing in and out of her pussy. Her determination to get the most out of her workout makes her cunt extra tight, the sensations made harder to overcome because you commanded your blonde bitch to give you a slow fuck.

"Place your hands behind your head, Britney. I want to kiss and fondle your boobs while I fuck you."

"Yes master," your sister responds. Desiring more visual stimulation, this modification gives your eyes a blatant, unobscured view of Britney's bouncing titties and stiff nipples, bobbing up and down as you fondle them, lick them and suckle them. As the smell of her sweat and her sex fills the room completely, you realize that all of your senses are being stimulated by your sister's pendulous breasts, her wicked smile, and the constant pumping of your member in her wet, dripping twat. Your dick never had a chance as your ejaculate deep inside of your blonde sister's body.

"OH MASTER!!! I'M CUMMING!!!," Britney yells in response to your pleasure. As she comes, coating your rock-hard cock in her juices, you find that you've lost so much concentration for your own orgasm that you've let Britney out of her trance for just an instance, allowing her ****, feeble mind to process all of the sexual stimulation you've given to her. The result is like a brilliant, incomprehensible crescendo, and instead of snapping back to reality your blonde sex **** is rocked by the greatest orgasm she has ever had.