You don't stop but this shock reduces your flow and you just keet dribbling into your pull-up as you blurt out, "just a water", feeling your cheeks redden. He lingers, his eyes fixed on you, "anything else?", and that's when you realise you're not just wet from pee.
Your heart races, but you feel it's beat pulsing through your clit. Yes of course you're soaked in piss, by now your arsecheeks are sodden, all warm and sticky, you feel the weight of your pull-up hanging between your legs. You can feel though that your pussy is so swollen, the wetness between your lips is viscous arousal, it takes all your willpower not to reach a hand between your legs and rub yourself, you're absolutely ravenous.