You assholes. Show some dignity, respect & courtesy towards your fellow human beings. Just because someone is serving your food, or ringing up your groceries does not mean you have license to verbally abuse them. Does it make you feel more powerful to attack someone who is literally helpless to do anything to stop you? Are you so starved for attention, respect or a sense of power that you have to pick on the one group of people that cannot fight back? Grow a pair, pick a fight with someone who's not on the clock.