Peeing all over my flatmates washing

Description: I'm being a good flatmate by putting on a wash for her, although i can't help myself but be a little naughty whilst i do it.  i'm already bursting and she's hogging the bathroom so i take a little revenge by peeing all over her washing, even using her things to wipe myself with, before stuffing it inside the machine before she has a chance to see!  after all, what she doesn't know, can't hurt her...