Warning: Contains wetting accident

Anna was in Science, quietly reading, when she realised she had a massive stomach ache. She groaned quietly, trying to ignore the pain by reading her textbook. "The sulphuric gases cause volcanos to erupt rather loudly..." Anna could read no more. With a very audible and horrid gurgle from her stomach, she could not suppress a cry as she felt the pressure that had been in her stomach drop. All eyes turned to her as she very suddenly stood up, hands reaching behind her and worming into her butt, her fingers pushing through her skirt and into her crack to try and hold it, but the lack of pressure in the front caused a whole new problem. The room went silent as Anna's thighs slapped shut, trying to stop as urine spilled out of her, soon splashing noisily to the ground below. And with a final gasp, a very loud and long fart erupted from beneath her, lasting for a good 30 seconds, before it carried with it a wet, gushing sound, Anna's skirt expanding out beneath her as she doubled up, her hands coming back around to hold her stomach as her head fell, her forehead resting on her desk. Her fellow classmates were quick to move away from her sides as mess began to ooze from under her skirt, spurting out from under her thighs and down to the floor below, mixing with the golden liquid already puddling at her feet. With every gush came a new groan from her stomach, a fart pushing out more hot, wet mess into her panties, as pee continued to fall down her legs. After a minute, it was over, but Anna had exploded all over herself and the damage was done.