Public restroom masturbation is the answer!

As Allison drags you away from a second helping of eye candy (he's black... I wonder if it's true that black guys have bigger...) a sign on the wall catches your attention. Still not trusting yourself to speak, you tug Allison's arm to get her attention, then gesture nervously towards the restrooms.

"Didn't you go before we..." She starts, trailing off as she notices the two tents in the front of your t-shirt. "Seriously? Whatever, just do what you have to." That's good enough for you, and you race off towards the restroom doors. She says something else, but you're in a hurry, and it's taking every bit of focus you have at this point just to remember to go into the women's restroom and not the men's.

Finally the stall door is closed and locked behind you, and you can at least pretend you have some privacy. You fumble frantically with the button of your jeans, and by the time they're pooled around your ankles you've started to realize that your immediate surroundings are not exactly conducive to a swift orgasm.

Closing your eyes, your mind quickly produces one of your favorite masturbation fantasies - your high school English teacher bent over her desk as you plow into her from behind. That worked great before, but you find it difficult to fantasize about fucking someone with your dick while your fingers are currently working on your pussy. The fantasy morphs and shifts in your mind, and soon enough you're the one bent over the desk while Ms. Smith plows you with a strap-on. This time you know you've hit gold, and you speed up your ministrations.

Ms. Smith is pounding into you hard and fast. She's punishing you; you weren't paying attention in class. The evidence is right in front of you: your notebook is lying on her desk, open to a page full of doodles of young girls with older women in various sexual positions. You've been a naughty girl, and as punishment she's going to keep you after class every day until the two of you have acted out every one of your depraved fantasies. You cum fast and hard.

Still, you aren't satisfied, and it doesn't take long for you to slip back into the fantasy. Only this time Ms. Smith is nowhere to be seen. Instead, as you crane your neck to look behind you, you see those same bulging biceps from before holding you to the desk. No, it's not a desk anymore either - it's a store counter-top. Biceps guy has dragged you into an empty storefront to have his way with you. You call out for help (Only in the fantasy of course. You hope.) but the strangers passing by make no move to help you. Instead, they stand there and watch, some of them calling you names like "slut" and "whore". Then to shut you up, the black guy from before shoves his giant dick in your face, and you can't resist the urge to suck it. You come even harder than before.

This time you think it worked. You clean yourself up, at least as much as you can with toilet paper, shimmy back into your jeans and head out to wash your hands. When you see another woman is at the sink washing her hands, it suddenly occurs to you that you weren't exactly quiet just now. Judging from the look she's giving you, she heard quite a lot. Judging from the blush in her cheeks, her hard nipples and her shallow breathing, she enjoyed hearing it. You can just imagine her shock turning to arousal as she overheard your brazen display from the stall next door, and... Fuck.

Five minutes or so later, you come out of the stall again. This time no one else is there as you wash your hands. When you exit the restrooms, though, you bump into a tall, dark, and at least moderately handsome stranger leaving the men's restroom at the same time. You shudder slightly and softly stammer out "oh, uh, excuse me" like a hopelessly shy virgin.

It'll have to do.