Stop trying to make piss sexy. It will never be sexy. Ever.
Waterworks is one of my biggest pet peeves and is a huge turn off whenever I see a waterwork scene. I groan every time I see a work where a woman pees herself due to an intense orgasm. Just disgusting.
Anyway, the story didn't make any sense. Don't know why the MC thought her peeing would attract unwanted attention in a public bathroom. What, do women peeing sound different from men peeing and if so, you think anyone can tell the difference?
And sacrificing his jacket to stop the flow. Yeah, I think the MC was overthinking this.