Jen could feel pressure in her bladder. Since Kyle fucked with her usual schedule, she never had a chance to use the restroom before meeting Beth. Her arousal had worn off as she listened to the teacher drone on. She crossed her legs and patiently watched the clock. The bell finally sounded and she made a trip to the restroom before heading back to her locker.
Her dick was still flaccid. Aside from being squished awkwardly below her panties, it wasn’t causing her any trouble. She entered an empty stall and pulled down her skirt and panties before sitting on the cold seat. After a moment, urine poured out of her slit. To her surprise, warmth traveled down her shaft and some piss splashed her butt. She tensed as soon as the warm liquid hit her skin. It was a little painful but she held in the remaining urine and stood up. There were a few trails of urine leaking down the back of the toilet, not much on the seat though. She managed to stop herself before things got bad.
She took a wad of toilet paper and wiped the piss off of her butt and the seat, then carefully sat back down. She made sure to sit far enough forward that her dick would have an opening to aim for. She reached back and aimed as best she could without being able to see. She relaxed once more and felt the two streams of urine vacating her body. It was odd to hear both hitting the water at the same time. Before she was totally empty, she tried to hold it in the place she was more familiar with. Her body obeyed and what was left fell only from her penis. It was apparent that her two genitals were somehow linked to the same bladder. She had no intention of staying that way, but was glad she had some control over which one she wanted to use.
Fortunately, the small amount of pee that splashed onto her top was hardly noticeable after patting it down with a damp paper towel. She waited until the bathroom was empty then stepped out to look at her back side in the mirror. She used a paper towel to dab any remaining piss then pulled back on her underwear and skirt...