Sit ups

"Alright next up we'll be working on your core."

You lead Tracy over to the incline bench which has been positioned up against the mirror. Tracy climbs into position so her head is down towards the ground and her tits are leaning back towards her face. You notice her looking down at the cum on her tits with a yearnful look in her eyes. She can wait until later to take care of that.

"Alright this one's pretty simple too, all you have to do is do a sit up to bring yourself all the way up and then fully deep throat the dildo attached to the mirror. Think you can handle that slut?"

Tracy nods eagerly. "How many times should I do it sir."

"You can keep going until I tell you to stop."

"Yes sir."

Tracy does her first sit up, bringing herself all the way up so she's face to face with the dildo attached to the mirror. Here she can see her own reflection and take in her shameful slutty appearance in all it's glory, cum covered tits all out in the open and pussy and ass completely exposed too. She opens her mouth wide and wraps her lips around the dildo before sinking her head down onto the cock. Her first rep is a bit slow as she warms up her throat on this rather long dildo, taking some effort to **** herself all the way down on the dildo. Without any other support, she's almost entirely using her ab muscles to push her head all the way down on the dildo. After some initial gagging, she eventually manages to bring herself all the way down on the dildo. She's now essentially making out with herself in the mirror as her lips make contact with the glass. Her eyes are wide open as she looks into her own reflection and you notice they're watering up as a natural reaction to taking this dildo all the way down her throat.

Having finished her first rep, she pulls herself back off the dildo and lowers herself back down on the bench. You notice a mark left on the glass from her pretty red lipstick, making an imprint of her lips around the dildo. Tracy goes up for her second rep, this time managing to throat the dildo a bit faster. You decide to give her a bit of a reward for her hard work and go grab a wand vibrator that you've prepared. You bring it over to Tracy and hold it up against her exposed pussy, providing her with some pleasure as encouragement for her workout. Tracy starts moaning as she does her reps, from the vibrator up against her pussy and also strangely as a result of the ab workout she's currently doing. After enough time, Tracy's pussy is really starting to get sloppy and her moans are getting louder.

"Oh fuck, that feels so good. Please sir, may I cum."

"No slut, you're here for exercise not for pleasure. Keep going and don't you dare let yourself cum." Tracy's eyes go down and she lets out a soft "oh fuck" as she realises the trouble she's in.

Tracy continues the exercise repeatedly until she's loosened up her throat enough to simply descend onto the dildo in one go, letting out a loud *glurk* each time. You lose track of how many times Tracy has done this exercise but eventually deem it enough. On her final rep you grab the back of her head as she descends on the dildo, taking her by surprise. Her eyes open wide as you hold her there, with the dildo all the way down her throat. You then drop the vibrator and use your other hand to hold her nose, blocking her breathing entirely. Her eyes open wide with surprise but she remains relatively calm at first. Slowly as you hold her there for longer she starts gagging around the dildo in her throat, spitting up saliva around the edges of her mouth and dripping it onto her thighs. Finally Tracy starts to reach the end of her limits and raises her hands to touch the glass, instinctively whacking it a couple times. You let go of her nose and release her head. She quickly pulls her head back off the dildo and starts panting, catching her breath after her rough treatment.

"Oh fuck, that was intense." She lets out between breaths.

"I'm impressed, almost 40 seconds."

"Thank you sir, should I keep going?"

"No I think that's enough of that one, lets move on."