Say It Right: Assertive, Aggressive, or Passive?

Imagine you are in the lunch queue and someone pushes in front of you. You feel a flash of anger. What do you do? Do you push them back and shout? Do you say nothing and stare at your shoes? Or do you look at them calmly and say, 'Excuse me, I was here first'? Think about it for a moment. There is no trick — just notice which choice feels most like you right now.