Look for Miss Davenport in the science classrooms.

You’re eager to hop on the bus and head off on your trip, but you decide there’s no harm in touching base with Miss Davenport before you leave. You figure it’s a tossup whether she’s gone back to her office or is already in the science classrooms preparing to teach the younger students, and decide to start with the science labs because they’re a little closer.

As you walk through the hallways to the science wing of your high school, the noise of hundreds of teenagers gradually dies out. There are no student lockers in the science wing and no one has science first period, so these halls are abandoned this early in the morning. You peak into a few of the classrooms, seeing no one, before turning into Miss D’s usual room. No one is here either, but you hear some noises from the adjoining prep room, where the materials for student experiments are set up to save time during actual classes. With lots of counter space around the walls, doors into both this and a second science classroom, and a big table in the center of the room covered in test tubes and other equipment, this room makes the lives of the science department at your school much easier. Expecting to find your physics teacher, you look into the prep room.

Instead of Miss D, however, you discover Stacy, the young teacher’s assistant, standing with her back to you. Stacy is a pretty brunette just out of college who does a lot of the grunt work for the science teachers setting up experiments and arranging chemicals. She doesn’t interact with students much so you don’t know her well, but you’ve spent plenty of time admiring her wavy shoulder-length brown hair and trim frame, including the muscular thighs she shows off in her trademark black miniskirt.

She’s wearing that skirt now, and you spend a few seconds admiring her long, tanned legs, so you don’t immediate notice the oddness of her posture. With her back to you, you might assume she was working on the counter she’s facing given the angle of her head and the rhythmic movements of her shoulders. You’re about to call out to her, to ask where you can find Miss D, when Stacy suddenly moans quite loudly and turns around to lean back against the countertop.

You instinctively duck back into the classroom, just peeking around the doorway, but it wouldn’t have mattered. Stacy’s eyes are closed, which lets you take your time processing what you’re seeing. The young woman has one hand down the front of her skirt, clearly rubbing her pussy, while her other hand is taking advantage of the fact that the first four buttons on her white blouse are undone, by playing with one of her tits. Stacy is masturbating furiously, totally oblivious to her surroundings. What could possibly be driving her crazy like this?

She’s also getting more and more into it, and soon she’s hiked up her skirt to her waist, revealing a fairly conservative pair of panties at the top of her sexy legs. The underwear is immediately pulled down and kicked off, and Stacy starts thrusting two fingers into her dripping wet slit, moaning even louder now.

Watching Stacy masturbate with abandon is driving you crazy. You’re debating whether it’s safe to pull out your cock and masturbate right along with her when the horny brunette suddenly lunges forward with a sound that’s half moan and half roar, sweeping all of the junk on the central table right onto the floor. The crash from all the broken glass is a hell of a noise, but with this part of the building abandoned you realize it’s possible nobody else has heard it. Stacy leaps onto the now-clear table and lies down on her back, planting her shiny black heels flat on the table and spreading her legs. With her skirt still tangled around her waist, you have a fantastic view of her long legs, though you’re standing too far to the side to see her pussy directly.

That’s when you notice what Stacy has in her hand. She’s clutching a large empty test tube that survived the shattering of a moment before, and she brings it straight to her pussy lips. The tube is roughly as thick as your cock when fully engorged, but the smooth glass slides straight into Stacy’s well-lubricated slit. Moaning even louder now, the hot teacher’s assistant starts to pump the tube in and out, fucking herself with it.

You’re completely stunned by this show that you’re being treated to, and you wonder if you’re dreaming. What could possibly drive a responsible young woman into such a frenzy of lust that she tries to satisfy herself with a test tube during the school day? Your puzzlement and curiosity war with your horniness--part of you desperately wants to jump right in there and replace that test tube. In Stacy’s current state, it doesn’t seem likely that she’d turn down an offer to fuck her silly.