As the class went on, Jen kept on peeing, the puddle slowly spreading out from her chair. Of course, it was hard to focus on the teacher when she could feel herself constantly peeing on her legs. It felt really good... it felt kinda hot. As the lesson went on Jen became more and more horny, the scent and feel of her piss driving her wild.
One of her hands idly slipped down between her legs and started to rub her crotch. She let out a sigh of pleasure as she gently started to masturbate, hoping no one would notice. She managed to slyly play with herself for a few minutes before Susan looked over and noticed. Gasping, Susan leaned in towards Jen. "Jen are you playing with yourself?" Jen didn't answer, biting her lip and nodding with a small, suppressed moan. Susan gave her a weird look and sat back up. "Jen, you know it's okay for you to masturbate whenever you want right? We all know how horny you get from your condition."
Jen felt the world shift, and she no longer felt the need to hide it. Her hand went to town, sliding her fingers in and out of her soaking pussy. Every motion splashed piss all around her desk, up onto her legs, and down into the puddle below. Jen leaned back in her chair, one of her hands fondling her breasts as she continued to work herself closer to the edge. Some of her classmates looked at her from time to time but most paid her no mind. 'Oh god, this is amazing! I'm gonna.. I'm gonna cum in class because of my piss!' Jen thought as she brought herself to orgasm, crying out. As her pussy clenched it forced piss out of her at a faster rate than normal, splashing off her hand and hitting people around her.
The teacher turned around. "Jennifer! Please try to keep it down when I'm teaching." Some of the students were wiping piss off their clothes, skin and work. Jen smiled as she sank into her chair in the afterglow of her orgasm.