Invigilator: Time's up! Please stop
writing.
Invigilator: Please make sure that you have written you index number on the answer script, and...
Student: Oh, luckily, I forgot about my index number...[pick up the pen, refer to the exam slip, start to write on his index number...]
Invigilator: I SAID PLEASE STOP WRITING
Student: {i know but my index number}[continue writing]
Invigilator: STOP WRITING
Student: {what the hell you want from me}
*perhaps she should say STOP ANSWERING