You spot Talia going to the teachers' bathroom

A few weeks pass and you are more than glad to have met Talia. She has quickly become a very dear friend of yours, you spend a lot of your time with her, while at school. Her parents are strict, so they do not allow her to see a boy outside of school hours, but you are nonetheless happy.

Things change this day, when you see her almost running through the hallway, her face red as a tomato. You raise an eyebrow, what could it be? You shake your gaze away from her, trying to respect her privacy, but when you spot with the corner of your eyes that she went into the teachers' bathroom, your curiosity wins over.

You carefully check the entire hallway for danger, but it is all clear. You slowly open the door. A creak stops you, cold sweat runs down your forehead, but none hears it, so you proceed. Inside there is silence, except for the breathless moans of someone. You creep forward, trying not to make a sound, until you reach the end of the bathroom, where a partially open door reveals Talia's hiding spot.

Your eyes open wide when you peer inside. You see Talia hunched over a machine that looks like a giant steel fleshlight, with tubes hooked up to it, disappearing into the wall. She is wildly humping the machine, trying her hardest to keep her mouth closed, but once in a while a moan and a grunt escape her lips.

The machine is a symphony of creaks and clonks, it visibly sways back and forth, struggling to keep up with the futa's ****. Judging by the girth and length of the machine, she must have been pretty big down there, but you cannot see her cock, only he swinging balls, each the size of a ripe orange. You suddenly understand why she always wear baggy clothes, but what is the point of this thing?

Your answer suddenly comes: With an animalistic grunt, Talia slams herself against the machine, gripping the handles mounted on top of it tight, so tight that her knuckles turn white. Her balls visibly contract, while her cock floods the guts of the machine with cum. One shot, two shots, three, and she just keeps going. You hear an engine turning on behind the wall, and the tubes shudder as they are call to fulfill their duty. And yet she keeps going, cum starts to leak out from the entrance, dripping down her clothes in fat drops, while a gurgling sound reaches your ears.

The machine redoubles its efforts to keep up with the cum flood, but it is barely able to keep up. Your jaw is somewhere on the pavement, your eyes wide open. How is it possible? How could she cum that much?

Memories of old biology lessons reach your mind: A few futanari are born hyper (one for every 50.000 futanari); they are futanari with above average male parts, above average libido, and whose cum output is borderline against the laws of physics. You never really thought of them much, what you knew was merely the few notions you learned at school and the occasional news article or social media post. It is the first time you met one personally.

While you are busy thinking about what you just witnessed, Talia is busy emptying her balls. A few LEDs flash red on the machine, but the futanari does not give up and keeps pumping the machine full. Just when the last green light turned red, she finally finished. With a deep sigh of satisfaction, she extracts her cock from the machine, dripping with cum. Her tool is as impressive as her balls, easily above the foot in length and think enough that she had to use to hands to wrap her fingers around it. An angry vein crossed its surface, you swear you could almost see her heartbeat, you cannot imagine the quantity of blood needed to keep that monster going.

And then, you look up and your gaze crosses with hers. Glacial silence falls upon you both, only the struggling gurgles of the machine can be heard, busy processing her incredible output.