All characters in this story are 18+
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"All right class, settle down. It's time to begin the fitness test."
The gym class continued their various conversations, paying the instructor little mind. While he was rattling off instructions, Johnny asked Lucy if she could pass him the calculus homework after gym.
"-Yeah sure," she said after stumbling over her words. Then Lucy felt someone punch her shoulder. It was Francisca behind her.
"You are just going to help him cheat like that?"
"Pretty much."
"You need to keep it in your pants, Lucy. You can't just do everything for a guy because they're hot."
"Is it really such a big deal? We already sent our college applications."
Then a whistle blowing pierced the air and the gym went silent, with some students in the front covering their ears. "Push-ups! Let's go!"
Lucy couldn't afford to sweat. Not since a couple days ago. She took it easy and did half push-ups, hoping the instructor wouldn't notice her in the crowd of her colleagues. But she wouldn't be so lucky.
"Lucy, stop. Those are terrible push-ups. If you want to keep your 5.2 GPA, then you will have to show some effort!"
So, she did some actual push-ups. One drawback of being out of shape is that she started to sweat after only a couple, and with that small tendrils started to form all over her body. They began to crawl their way to their targets, some starting to tweak her nipples and more adventurous ones on her ass. By the tenth push-up they had grown into small tentacles and Lucy was red in the face and she couldn't help but moan slightly during her last push-up.
"That's what I like to see! Look at Lucy over there pushing herself!"
"I can't take any more of this," Lucy thought. All she wanted was to finish off senior year normally. She got up from the gym floor and ran before this situation got any worse.
"Hey Lucy, the fitness test isn't over!" the instructor yelled as the gym door closed behind her.
With each step she took, she sweated more, empowering these phantom tentacles fondling her body. They became larger and more aggressive. One slithered around her clit and another penetrated her, going in and out of her ass. Her steps became increasingly labored as the pleasure is overcame her will to hide. She stopped to rest for a moment next to some lockers while the tentacles pound her harder and faster, but this rest would be short lived, as a hall monitor approached.