A secretive smile plays on her lips as she unbuttons her blouse, revealing a lacy bra that struggles to contain her heaving breasts. Her hands slip into her panties, rubbing herself with increasing urgency. The fabric grows damp, not just from her arousal, but from her naughty little secret. She leans back, eyes closed, fingers moving faster, until she can't hold it in anymore. A warm trickle fills her panties, the scent of urine mingling with her sweet musk.