The urge in her bladder was getting quite acute by now and she realised that she would need to go in the next minute or so or otherwise the red panties she was wearing under her skirt would be getting a good soaking. Not that Emma had anything against pissing in her underwear. At home, on many an occasion she had purposely let loose with a strong squirting shower of her hot pee, straight out of her pussy and directly into her panties. She loved the lovely warm sensation as her piss flowed out of her muff lips and into her underwear, feeling the material dampen as it absorbed her hot piss. Then the lovely damp stain would grow as she pissed more and more of her hot urine into her panties. The feeling would grow spreading outwards around her crotch and down and around to cover her bum cheeks with her spent pee. Just remembering all the times she had purposely peed into her clothes was tempting Emma to have a quick go now. Just a little squirt she thought - nothing too much as to cause a running stream down to the floor for all to see...