A teacher comes in

"You know that exercising is not allowed on the school bus," a stern voice of one of the female teachers said.

Jes and Angie were still slowly massaging Mi-Cha's sex and the poor girl was not registering what was happening around her as her pussy continued spasming in a vain hope to reach an orgasm.

"Let go of her, so she is able to hear what I am saying."

As the teacher said, the twins released the limbs of the short girl who immediately pulled her legs up and hugged herself.

Mi-Cha's normally perfect appearance was now a mess of a sweaty girl with disheveled hair.

The teacher, Mrs. Montgomery, held onto a seat hold while waiting. She was one of the older teachers in her fifties. At her age, it looked like her husband made her take good care of her body. Even with gray hair, she still had sexy curves and a large bust that drew attention.

"Are you finally with us, miss Mi-Cha?" asked Missis Montgomery impatiently.

Mi-Cha managed to nod her head and look towards her.

"Finally. I know that Mi-Cha's mother asked you to take charge of her during the trip but all three of you know that exercising on the school bus is prohibited. Furthermore, Mi-Cha is found sitting here with you on a two-seater which is against health and safety regulations, and she was so loud that we could hear her across the whole bus. That will require extra disciplinary attention for her. Thanks to the school trip, we have limited guardian privileges over all the students' Moral Purity Assistants for the duration. Mi-Cha there are two seats free over there just for you, go sit there."

Mi-Cha stood up on her shaky legs and started going in the given direction while pulling her skirt down. Her panties were lost somewhere and she was bare underneath.

All the students around were still watching attentively and snickering.

Missis Montgomery pulled out her tablet and started changing settings.

Both Jes and Angie felt sudden heat in their bodies and throbbing all through their sex, the unmistakable signs of their arousal being artificially rapidly increased by their implants. They instinctively pressed their thighs together but found their asses being painfully jolted unless they both kept their legs wide apart.

"That will last for the remainder of the trip, enjoy the next 4 hours, ladies."

The twins groaned. They didn't look forward to being unbearably horny for hours without any actual stimulation or a way to release the pressure building inside of them. The arousal now spread through their whole bodies and they could feel their nipples poking against their school shirt uniforms and their panties turning wet with their juices.

Jes looked at Angie who smirked. She raised the hem of her skirt to see her own erect clitoris throbbing in her panties. It was asking for attention that the implants won't allow her to provide.

Mi-Cha raised her eyes towards the teacher, who was now coming her way. She was grateful to be out of the twin's reach but worried about how she would be punished for something that wasn't even her fault.

Mrs. Montgomery started tapping away again on her tablet. She kept making side glances at the girl. This was the first time that any of the teachers were getting to discipline her.

****'s daughter was always so well put together, very polite, with perfect make-up, clean clothes, long straight black hair, and a slender body like a model. Without a question one of the most beautiful young ladies at the school but also distant from all other students. She has never seen her making friends.

Well, it seems that she is now making friends with the twins.

"Setting your arousal high is obviously not gonna do much right now," she said to the snickering of Mi-Cha's schoolmates.

Mi-Cha was certainly not looking like herself. She was a mess and it was a surprise that she was not crying.

"As a punishment for disturbing the whole bus with your loud noises, if you now make a beep, for the rest of the trip, you will gel level 1 to 3 jolts," she started while watching the girl.

"For breaking health and safety regulations, you will be stripped for the rest of the bus ride."

With those words, Mi-Cha knew to start undressing immediately. It was a common form of punishment these days, however, Mi-Cha herself was never stripped at school herself.

She knew she had to go fast otherwise she would get painful burning wherever her body touched any clothing apart from socks and shoes. Her skirt was quickly discarded showing her bare pussy with a persisently throbbing red button. The rest of the school uniform soon followed.

Mi-Cha understood that under the stripped MPA mandate, she was not allowed to cover herself in any way.

Everyone who could, was staring at her, as she sat there with her legs spread apart and her breasts bare for them to see. She had erect nipples on top of teardrop-shaped tits that looked nearly too large for her petite frame.

The naked girl felt the eyes of her schoolmates roaming over her body and her pale white skin was visibly turning red from both the embarrassment and arousal.

"This is your last punishment: for exercising on the bus, a bit of vaginal focusing for you," Mrs. Montgomery said without explaining any further.

Mi-Cha made a surprised yelp and immediately covered her mouth at the feeling of a sharp jolt caused by her first punishment. She had to be silent.

While she was sitting there with her body spread for the onlookers, she felt the tip of a large phantom phallus spread her pussy lips and start slowly making its way inside.