This is so embarrassing; Sosha totally pees in her jeans in a very public setting in this video.
In this scene, we find Sosha next to a busy public street, desperate to pee. As cars drive past she squeezes her legs and holds her crotch, trying not to have an accident. Ultimately, her attempts at holding back the flood prove to be futile. With cars speeding past her she pees in her jeans, leaving a visible puddle on the pavement under her.
Humiliated, she runs away, trying unsuccessfully to cover the visible wet stain on her pants. Once she finds some privacy we get a chance to examine her wet clothes more closely and she talks about the experience.