Okay, to reply to my earlier comment, I don't mean to emphasize on any stereotype.
But rather, it is a particular mean nurse colleague who had been picking on me and making life difficult. I realise that she often does this to new colleagues who have just joined the company. She would often do so as a way to "challenge" and "test" out people knowing that they are new and uninformed about various procedures in the company. then i saw this phrase called "nurses eating the young". =( dunno why does this behaviour still exist nowadays. tsk.