Sienna did her best to follow the format of this situation, but she didn't really get it at first. When she did, she filled the cup several times, but this then became steadily more of a challenge despite having a very full bladder (her bulge is clearly visible throughout most of the movie). Sienna seems ill-suited to the stopping and starting required for this format, and while she was clearly enormously uncomfortable, she found it increasingly difficult to pee. The movie does not end with an explosive release as you have seen in some of them, although there is plenty of pacing and pee dancing and numerous close-ups of Sienna's vagina as she releases. This movie format, more than any other, truly emphasizes the differences between women when they are desperate to pee.

26 minutes 59 seconds - 960x540 pixels - MP4: 1,033.0 MB