As afternoon wore on, Diana's distress had only grown worse. She'd missed her mid-morning toilet break at school, and now there was no way she could last until it was time to return home. Between her increasingly desperate need to relieve herself and the burning sensation in her gut, she felt utterly miserable.
Her fellow high school classmates, who had been discussing various topics during their free period, suddenly turned their attention towards Diana as they noticed her discomfort. "Are you okay, Diana?" One of them asked with genuine concern in her voice.
Diana tried to ignore their questions, hoping that they would just leave her alone so she could concentrate on her urge to poop. But as they persisted, she finally cracked under the pressure. "I can't hold it anymore," she confessed weakly, her face flushing with shame.
The other girls exchanged glances, knowing full well what she was talking about – all of them had experienced the same thing before. One of them suggested something that they all knew would help: "Why don't we try using the slave's tongue?"
Diana wasn't sure she wanted to do that, but the thought of not being able to poop anymore was too much for her to bear. "Okay," she whispered, barely audible even to herself.
They called the slave over, a nervous-looking young man who had been secretly lusting after them all semester. "You, slave," one of the girls said, jabbing him in the chest with her finger, "kneel before Diana and show her your tongue."
Reluctantly, the slave got onto his knees before Diana and stuck out his tongue. She took a deep breath, closed her eyes, and lowered herself onto his face, feeling his warm breath against her skin. She gritted her teeth as the burning sensation in her gut spread downwards, but she couldn't focus on that now – all she could think about was the need to finally release herself.
With a loud moan, Diana pushed as hard as she could, feeling the slave's tongue press against her anus. It was uncomfortable at first, but then something inside her broke loose, and the sensation of needing to go to the bathroom disappeared. Relief washed over her in waves, and she collapsed onto the floor, tears streaming down her cheeks.
"Thank you, thank you so much," she cried, looking up at the slave with gratitude in her eyes. The other girls watched in silence, their hearts racing with mixed emotions of disgust and arousal at what they had just witnessed.
As the school day drew to a close and the girls prepared to go their separate ways, Diana couldn't help but feel a sense of closeness to them that she had never experienced before. Although she knew that what they had done was shameful – even disgusting – there was also something undeniably erotic about it. And deep down inside, she knew that she would never be able to forget the feeling of release she had experienced with the slave's tongue.