Warm-up accomplished!

Finally you decide that you've waited long enough allready, once again sliding your fat cock out of the girl's pussy and, just as you've done the last few times, let your thumb slip free of her ass to fill the vacant spot for some quick re-lubrication. Instead of going down at her with your tongue however, you just lean in and let a good gob of spittle drop unnoticed right between her upturned buttcheeks before pulling your finger back out of her snatch and swiftly rubbing the mixture of juices and saliva into her puckered backdoor.

Nancy doesn't even seem to notice at first when you exchange your thumb for something else, her blue eyes just smiling up at you through the long blonde hair that clings to her sweat-covered skin and pretty face while she braces herself for the intrusion. Not until your cockhead is allready wedging it's way inside, stretching her puckered little hole more than twice the width of your finger, does she finally realize something is wrong and makes the mistake to start lifting herself up from your desk to get a better look rather than trying to pull away or shut you out.

With both hands holding on to her hips you firm but gently press onwards, feeling the girl's sphincter try and squeeze shut around your shaft just a moment too late while your mushroom-formed helmet relentlessly drives deeper into her bowels. A loud grunt escapes her lips and her blue eyes grows wide in surprise as she manage to raise her head enough to see, and feel, your heavy shaft slowly dissappear into her ass.

"Nnnnh... Fuck...?!" You hear her grunt just as she makes her first attempt to pull away, an uncertainity in her voice as if she doesn't quite believe what's happening and isn't fully sure how to react to it. As pulling away doesn't seem to help at all with your strong hands latched onto her hips, she's soon trying to first dislodge your fingers with her own while her grunts and small squeals of discomfort grows steadilly louder. "Ow, fuck... You're... Owww...!"

"Just relax, Ms.Stein!" You just grin back at her, losing nearly an inch of depth while removing your hands from her hips to keep her from scratching you with her long nails, but quickly regaining any lost ground and more as you instead grab at her wrists and pull her back onto your shaft. "Unnnh... Yeah... That's it...!"

"Oooh...!" Is all she manage to reply as you finally fill her up entirely, your heavy sack resting against the wet lips of her pussy while the head of your cock press up deep against her insides. For a moment she keep straining to get lose, and then she finally takes a deep trembling breath and let her head hang low as she seem to give in. "Ohh, fuck...!"

Keeping yourself deep inside of her, you let her accomodate to your size while gently pulling her into a more upright position against your chest. Her blouse is still in the way for you to reach her full tits, but that's quickly seen to as you easilly pull the front of the garment open and with equal ease manage to pull the bra up and out of the way. With both your hands firmly kneading those lovely mounds and rolling the small, fully erect nipples between your fingers, you slowly start fucking her tight little ass.

At first she tenses up again as she feel you start moving inside of her, but then let out another quiet groan and just lean back into your embrace. Rewarding her for her compliance you let one hand slide down her belly towards her crotch, quickly pushing her skirt out of the way by hiking it up in it's own hem before you can set to work, drawing a series of loud moans from her lips as you start fingering her crotch.

Her breathing comes quick and rugged while you skillfully keep playing with her pussy and sensitive breasts, her ass feeling hot and tight around your manhood while her whole body shudders in sudden pleasure. After a few moments of this she finally settles in, leaning her head back against your shoulder and meeting your gaze with a flushed and somewhat confused look on her sweet face.

"Not that bad, is it?" You smile at her while leaning in and kissing her soft, parted lips, slowing down your movements to just gently rub at her clit while leaving your shaft less than halfways buried inside of her. The lowered lack of attention immediately proves just as frustrating for her as you'd guess it would, and as you let go of her lips you can see a slight questioning frown forming on her pretty face. "Move...!" Is all that you say, and after a few moments of hesitation she bites her lip, shuts her eyes, and cautiously press down against you...

"Fffffuck...!" She quietly grunts as she impales herself on your waiting shaft, taking another deep breath before looking up at you again and just as cautiously starting to lift herself upwards. Next time she goes down you gently meet her with a thrust of your own and an increased activity of your fingers upon her sex, making her gasp in another wave of pleasure.

Knowing full well now that she's yours for the taking you slowly quicken the pace of your thrusts, letting your hands and fingers work her into a lustful frenzy while she accepts your length again and again deep into her ass until you're fucking her almost as hard as you would her moist pussy...!

The lack of steadilly renewed lubrication soon start to become a problem however, and eventually you push her back onto her hands and knees on the desk while you pull out and plunge deep into her juicy pussy instead, fucking her hard and fast while rubbing more of her juices and your saliva into her now somewhat gaping backdoor. When she's ready and well lubed up you're fascinated to find her raising her butt high in the air again, her hands reaching back and almost eagerly spreading herself open for you...

Now for more decisions... You feel that you won't last much longer by now, so you'll either have to take your time to calm down a bit, or simply have to settle for where you want to dump your load...