You've got time: take the quickie.

"Alright, I could use a quick fuck," you say. Sarah clicks back over to the porn and takes it full-screen. The scene has changed to a pair of incredibly hot lesbians fucking. Sarah bends over her chair and hikes up her skirt, revealing her gorgeous ass and wet, hairless pussy.

"Go ahead and put it in. I've been close to getting myself off for the past ten minutes, you shouldn't have any trouble getting in there," she says, not even looking back. You pull out your member and stroke it a couple of times to hardness, then push into her. As she promised, she's incredibly slick with her juices. You can hear her inhale sharply as you stretch her inner walls. "Fuck, are you using a bundle of pens or is that your cock?"

"That's all me," you reply, drawing out the 'aaaaall.'

"Goddamn, that feels good. So start fucking, already," she says as the Asian on the screen starts to squirt from the black chick's fingers. You start fucking Sarah hard and fast, and writhes through an orgasm quickly. You keep going, pounding her pussy into another climax, then a third that causes her to moan louder than the previous two. If anyone else has been in the office, it'd be easy to figure out what the new girl is doing on her lunch.

Eventually, you hit your own climax, gripping Sarah's hips tightly as you bury your full length in her pussy and release all your pent-up lust. You unload a massive load of cum inside her and pull out. She hands you a box of tissues and helps clean up. You both hear the office door open just as you're throwing the last tissue wad into her wastebasket; by the time you hear footsteps, your cock in securely in your pants and her skirt hides her fine ass once again. The porn is cleared from the screen and the drive containing it is hidden in her purse.

The rest of the day drags on, but you at least manage to get all your work caught up. Sarah flags you over at the end of the day and thanks you for your help with her little computer problem.

"If that's what you can do with just a quickie, I want to know what you can do when you've got time," she breathes into your ear as she starts for the exit.