A good FA never loses his/her temper with ANY passenger,whether fare-paying or staff on ID tickets(they are passengers too).Singapore cabin crew remain the industry's best and would never do this.WASPS(esp Brits) think its above them to be hospitable and respectful and lead with the shoulder.No wonder then that they reap what they sow.A Singapore girl,when she gets a demanding passenger,sees it as a challenge..can she tame the beast before the plane parks?Its entertaining to watch.But in any case they usually disarm any moron within seconds by using their charm and impeccable manners.