Linh is a student taking an examination under special circumstances, and Tilly has been appointed her invigilator. Tilly explains the rules of the test to Linh, including the fact that the exam is three hours long and she cannot leave the room until she has finished. In fact, neither of them can leave. All is well at first, but about half way through Linh feels the urge to pee. Tilly instructs her to hold it and Linh does for a while, but as she grows desperate she warns Tilly that she might piss herself. Tilly admits that she too needs to pee but is not making such a fuss about it. Linh tries... Show more